Risk factors for HIV infection among abandoned Romanian children

Southern African Origin of HTLV-1 in Romania

In Europe, most HTLV-1-infected individuals originate from highly endemic regions such as West Indies, sub-Saharan Africa, and South America. The only genuine endemic region for HTLV-1 in Europe is Romania where ATL series have been reported among Romanian patients. Our objective is to better understand the origin of this endemic focus based on a study of the genetic diversity of HTLV-1 in Romanians. DNA was obtained from PBMCs/buffy coats of 11 unrelated HTLV-1-infected individuals of Romanian origin. They include 9 ATL cases and 2 asymptomatic carriers. LTR sequences were obtained for all specimens. Complete genomic HTLV-1 sequences were obtained using four PCR series on 10 specimens. Phylogenetic trees were generated from multiple alignments using HTLV-1 prototypic sequences and the new generated sequences. Most of the complete LTR sequences (756-bp) showed low nucleotide diversity, ranging from 0% to 0.8% difference, and were closely related (less than 0.8% divergence) to the only previously characterized Romanian strain, RKI2. One strain, ROU7, diverged slightly (1.5% on average) from the others. Phylogenetic analyses both on partial LTR and the complete genome demonstrate that the 11 sequences belong to the HTLV-1a cosmopolitan genotype and 10 of them belong to the previously denominated a-TC Mozambique-Southern Africa A subgroup. In this study, we demonstrated that the HTLV-1 present in Romania most probably originated in Southern Africa. As most Romanian HTLV-1 strains are very closely related, we can assume that HTLV-1 has been introduced into the Romanian population recently. Further studies are ongoing to decipher the routes of arrival and dissemination of these HTLV-1 strains, and to date the emergence of this endemic focus in Central Europe.

Attitudes, practices, and priority of HIV screening and testing among clinical providers in Transylvania and Moldavia, Romania

Abstract

Screening and linkage to care are core, foundational strategies for HIV transmission prevention and for identifying People Living with HIV (PLHIV). In Romania – with an atypical experience in the HIV/AIDS epidemic – providing care for HIV+ patients identified early is a priority, though screening and testing can pose a challenge in some areas.

Methods

A survey of 125 clinical providers to explore important dimensions of HIV/ AIDS clinical care was conducted in Transylvania and Moldavia, where clinicians identified poor/ latent screening as a major problem in providing timely care and in preventing the spread of disease. We analyzed determinants of offering HIV screening/testing to patients using Pearson Chi-square analysis and logistic regression. Logistic regression generated Odds Ratios (OR) to reflect the magnitude of association between the relevant variables, with 95% confidence interval (95% CI) indicating statistical range.

Results

In total, 40.8% of providers did not provide HIV screening/testing to at least one segment of the population. Hospital-based providers were significantly more likely to offer HIV screening/testing to all segments than were non-hospital-based providers (58.1% v. 35.5%, respectively; p < .05). Providers located within institutions with screening/testing policies were more likely to offer such services to their patients (p < .05). Overall, 94.4% of providers indicated interest in more training around HIV screening/testing.

Discussion

Reaching Romanian and global goals for reducing HIV require more timely screening and action based on positive status. Romanian clinicians are interested in expanding HIV screening/testing and are interested in participating in training that helps them feel more prepared to undertake this work.

Diagnostic Difficulties in a Severely Ill HIV Patient with Multiple Superinfections - A Case Report

INTRODUCTION

As chronic HIV infection is prone to co-infections more than any other infectious condition, many severely immune-depressed patients require advanced diagnostic investigations and complex treatment.

CASE REPORT

The case of a 30-year-old severely immune-depressed patient with AIDS, who developed neurological impairment and was diagnosed with encephalitis is presented. Multiple diagnostic approaches had to be used in order to identify the etiologic agents responsible for the clinical, immunological and biological evolution. Despite using advanced laboratory investigations and complex treatment, the patient developed multiple organ dysfunction syndromes that led to a fatal outcome.

CONCLUSIONS

Establishing etiologic relations and treatment priorities in patients with severe immunodeficiency and co-infections can prove difficult, underlining the need of rapid syndromic testing.

Injection practices in 2011-2015: a review using data from the demographic and health surveys (DHS)

Background

Reuse of injection devices to give healthcare injections decreased from 39.8 to 5.5% between 2000 and 2010, but trends since 2011 have not been described. We reviewed results of Demographic and Health Surveys (DHS) to describe injection practices worldwide from 2011 to 2015.

Methods

We searched the DHS Internet site for data published on injection practices conducted in countries from 2011 to 2015, extracted information on frequency (number of healthcare injections per person in the last 12 months) and safety (proportion of syringes and needles taken from a new, unopened package). We compared gender groups and WHO regions in terms of frequency and safety. For countries with data available, we compared injection practices 2004–2010 and 2011–2015.

Results

Since 2011, 40 of 92 countries (43%) that conducted DHS surveys reported on injection practices. On average, the frequency of injection was 1.64 per person per year (from 3.84 in WHO Eastern Mediterranean region to 1.18 in WHO African region). Among those, 96.1% of injections reportedly used new injection devices (from 90.2% in the WHO Eastern Mediterranean region to 98.8% in the WHO Western Pacific region). On average, women received more injections per year (1.85) than men (1.41). Among 16 (40%) countries with data in 2004–2010 and 2011–2015, 69% improved in terms of safety. The annual number of unsafe injections reduced in 81% of countries. In Pakistan, the number of unsafe injections was the highest and did not decrease between 2006 and 2012.

Conclusions

Injection practices have continued to improve in most countries worldwide, although the Eastern Mediterranean region in particular still faces unsafe practices that are not improving. Further efforts are needed to eliminate unsafe injection practices in health care settings, including through the use of reuse-prevention devices. Despite some limitations, DHS is an easily available method to measure progress over time.

Plasma CXCL10 correlates with HAND in HIV-infected women

HIV-associated neurocognitive disorder (HAND) is characterized by chronic immune activation. We aimed to identify biomarkers associated with HAND and to investigate their association with cognitive function and sex, in a homogenous cohort of HIV-infected (HIV+) young adults, parenterally infected during early childhood. One hundred forty-four HIV+ Romanian participants (51% women) without major confounders underwent standardized neurocognitive and medical evaluation in a cross-sectional study. IFN-γ, IL-1β, IL-6, CCL2, CXCL8, CXCL10, and TNF-α were measured in plasma in all participants and in cerebrospinal fluid (CSF) in a subgroup of 56 study participants. Biomarkers were compared with neurocognitive outcomes, and the influence of sex and HIV disease biomarkers was assessed. In this cohort of young adults (median age of 24 years), the rate of neurocognitive impairment (NCI) was 36.1%. Median current CD4+ count was 479 cells/mm³ and 36.8% had detectable plasma viral load. Women had better HIV-associated overall status. In plasma, controlling for sex, higher levels of IL-6 and TNF-α were associated with NCI (p < 0.05). Plasma CXCL10 showed a significant interaction with sex (p = 0.02); higher values were associated with NCI in women only (p = 0.02). Individuals with undetectable viral load had significantly lower plasma CXCL10 (p < 0.001) and CCL2 (p = 0.02) levels, and CSF CXCL10 (p = 0.01), IL-6 (p = 0.04), and TNF-α (p = 0.04) levels. NCI in young men and women living with HIV was associated with higher IL-6 and TNF-α in plasma, but not in the CSF. CXCL10 was identified as a biomarker of NCI specifically in women with chronic HIV infection.

A systematic scoping review of hygiene behaviors and environmental health conditions in institutional care settings for orphaned and abandoned children

BACKGROUND

Adequate hygiene behaviors and environmental health conditions are fundamental to children's health, development, and well-being. They are especially important in institutional care settings for orphaned and abandoned children, a particularly vulnerable population whose basic needs are often not met.

OBJECTIVES

We systematically reviewed the evidence about hygiene behaviors and environmental health conditions in institutional care settings for children and associated health outcomes; interventions to improve these behaviors, conditions, and outcomes; and obstacles to improvement.

METHODS

PubMed, Web of Science, Scopus, and EBSCOhost were searched for studies in the peer-reviewed and grey literature. Studies were included if they reported primary data on one or more environmental health condition or hygiene behavior in an institutional care setting for orphaned and abandoned children.

RESULTS

Forty-five publications reporting on over 500 institutions in 29 countries were included. The most documented concern was poor personal hygiene behaviors followed by inadequate water and sanitation infrastructure and overcrowding. Protozoan, helminthic, viral infections, and diarrheal illness among institutionalized children were the most commonly documented associated health outcomes.

DISCUSSION

More studies documented the status of hygiene and environmental health in children's institutions than interventions to improve behaviors and conditions. Insufficient finances and expertise or involvement of caregivers are reported barriers to implementing improvements in children's institutions. The development of guidelines for essential environmental health standards in orphanages, monitoring of facility conditions, accountability for facility deficiencies, and implementation research to identify improvement opportunities would contribute to and promote the health and development of orphaned and abandoned children worldwide.

Conflicting Views in Narratives on HIV Transmission via Medical Care

Molecular studies suggest that HIV arose in Africa between 1880 and 1940. During this period, there were campaigns by European colonial governments that involved unsterile injections of large numbers of Africans. That, along with other unsafe therapeutic interventions, may have propelled the evolution of HIV from SIV. Since subtype B in Africa may have been concentrated in white African homosexuals, it is possible that Westerners rather than Haitians introduced the virus to the New World. Amplification of HIV subtype B took place in Haiti, where transmission was facilitated by hazardous medical procedures including plasmapheresis. Representations in the media, however, largely ignore Western contributions to the spread of AIDS. This article focuses on the value of alternative narratives in fostering a balanced view that is less stigmatizing on developing nations.

Overview of HIV molecular epidemiology among people who inject drugs in Europe and Asia

HIV strains continuously evolve, tend to recombine, and new circulating variants are being discovered. Novel strains complicate efforts to develop a vaccine against HIV and may exhibit higher transmission efficiency and virulence, and elevated resistance to antiretroviral agents. The United Nations Joint Programme on HIV/AIDS (UNAIDS) set an ambitious goal to end HIV as a public health threat by 2030 through comprehensive strategies that include epidemiological input as the first step of the process. In this context, molecular epidemiology becomes invaluable as it captures trends in HIV evolution rates that shape epidemiological pictures across several geographical areas. This review briefly summarizes the molecular epidemiology of HIV among people who inject drugs (PWID) in Europe and Asia. Following high transmission rates of subtype G and CRF14_BG among PWID in Portugal and Spain, two European countries, Greece and Romania, experienced recent HIV outbreaks in PWID that consisted of multiple transmission clusters including subtypes B, A, F1, and recombinants CRF14_BG and CRF35_AD. The latter was first identified in Afghanistan. Russia, Ukraine, and other Former Soviet Union (FSU) states are still facing the devastating effects of epidemics in PWID produced by A_FSU (also known as IDU-A), B_FSU (known as IDU-B), and CRF03_AB. In Asia, CRF01_AE and subtype B (Western B and Thai B) travelled from PWID in Thailand to neighboring countries. Recombination hotspots in South China, Northern Myanmar, and Malaysia have been generating several intersubtype and inter-CRF recombinants (e.g. CRF07_BC, CRF08_BC, CRF33_01B etc.), increasing the complexity of HIV molecular patterns.

Enhanced HIV-1 surveillance using molecular epidemiology to study and monitor HIV-1 outbreaks among intravenous drug users (IDUs) in Athens and Bucharest

BACKGROUND

A significant increase in HIV-1 diagnoses was reported among Injecting Drug Users (IDUs) in the Athens (17-fold) and Bucharest (9-fold) metropolitan areas starting 2011.

METHODS

Molecular analyses were conducted on HIV-1 sequences from IDUs comprising 51% and 20% of the diagnosed cases among IDUs during 2011-2013 for Greece and Romania, respectively. Phylodynamic analyses were performed using the newly developed birth-death serial skyline model which allows estimating of important epidemiological parameters, as implemented in BEAST programme.

RESULTS

Most infections (>90%) occurred within four and three IDU local transmission networks in Athens and Bucharest, respectively. For all Romanian clusters, the viral strains originated from local circulating strains, whereas in Athens, the local strains seeded only two of the four sub-outbreaks. Birth-death skyline plots suggest a more explosive nature for sub-outbreaks in Bucharest than in Athens. In Athens, two sub-outbreaks had been controlled (Re<1.0) by 2013 and two appeared to be endemic (Re∼1). In Bucharest one outbreak continued to expand (Re>1.0) and two had been controlled (Re<1.0). The lead times were shorter for the outbreak in Athens than in Bucharest.

CONCLUSIONS

Enhanced molecular surveillance proved useful to gain information about the origin, causal pathways, dispersal patterns and transmission dynamics of the outbreaks that can be useful in a public health setting.

Recent HIV-1 Outbreak Among Intravenous Drug Users in Romania: Evidence for Cocirculation of CRF14_BG and Subtype F1 Strains

Since 2011, Romania has faced an HIV outbreak among injecting drug users (IDUs). Our aim was to identify and describe clinical and epidemiological patterns of this outbreak. A cross-sectional study enrolled 138 IDUs diagnosed with HIV infection between 2011 and 2013 with 58 sexually infected individuals included as the control group. The IDUs had a long history of heroin abuse (10 years) and a recent history of new psychostimulant injection (3-4 years). Classical epidemiological data and molecular techniques were used to describe the transmission dynamics. A high prevalence of hepatitis C virus (HCV) coinfection was noted (98.6%) compared to the control group (10.3%) (p<0.001). IDUs had initially been infected with HCV. HIV infection was more recent, linked to starting injecting stimulants. HIV subtype analysis showed a predominance of the local F1 strain in both IDUs and sexually infected patients; in IDUs it also identified 28 CRF14_BG recombinants and six unique recombinant forms (URFs) between F1 and CRF14_BG. A few patients from both risk groups were infected with subtype B. Among IDUs, CRF14_BG was associated with a lower CD4 cell count and more advanced stages of disease, which correlated with CXCR4 tropism. Phylogenetic analysis revealed the spread of HIV through three major IDU clusters of recent date. Among IDUs with CRF14_BG, some reported travel abroad (Spain, Greece). By identifying clusters of IDUs with related viruses, molecular epidemiologic methods provide valuable information on patterns of HIV transmission that can be useful in planning appropriate harm reduction interventions.

Dermatologic conditions in internationally adopted children

Over 200,000 children have been adopted into United States (US) families from abroad since the year 2000. Health care providers who care for children adopted internationally should be aware of the spectrum of illnesses seen in this population, and should be prepared to encounter potentially unusual situations. An appreciation for the unique pre-adoption exposures and vulnerabilities inherent in international adoption is critical for proper diagnosis and treatment of this heterogeneous group of children. It is important to consider the impact of potential early childhood stressors such as nutritional, sensory, and emotional deprivation, trauma and abuse, as well as prenatal exposures to drugs, alcohol, and infectious diseases. Providers must also take into account international variation in health care practices, including immunization, treatment, surgical, and hygiene standards. The differential diagnosis for cutaneous eruptions in children adopted internationally is broad and must encompass endemic systemic illnesses with skin manifestations, such as measles, tuberculosis, leprosy, and congenital syphilis, and primary dermatologic diseases such as scabies and bacterial and fungal infections. The importance of maintaining a broad differential and open mind when addressing the dermatologic needs of these children cannot be overemphasized.

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Dermatologists caring for children adopted internationally should be prepared for unusual situations.

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It is important to consider potential iatrogenic and infectious exposures, early physical and psychosocial stressors, and international variation in health care practices.

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The importance of maintaining a broad differential and open mind in these cases cannot be overemphasized.

Neurocognitive functioning in a Romanian cohort of young adults with parenterally-acquired HIV-infection during childhood

The Romanian cohort can provide valuable information about the effect of chronic HIV-infection and exposure to combined antiretroviral therapy (cART) on the developing brain, based on its unique characteristics: young adults infected parenterally with HIV clade F in the late 1980s and exposed to cART for a decade. We conducted a prospective study using a neuropsychological test battery validated in other international HIV cohorts, in order to evaluate the rate and severity of neurocognitive impairment in a group of young Romanian adults. The 49 HIV-infected (HIV+) participants and the 20 HIV negative (HIV-) controls were similar for age and gender, although the HIV- group tended to be more educated. We found higher cognitive impairment prevalence in the HIV+ group (59.1 %) versus the HIV- group (10 %), and the impairment rate remained significantly higher even when the groups were matched based on the educational level (38.7 % for the HIV+ group vs. 10.0 % for the HIV- controls; p = 0.025). The nadir CD4 count was <200 in 71.4 % of patients, but at the time of neurocognitive assessment, 89.5 % of patients had normal immunological status and 81.8 % undetectable HIV load. Among the HIV-impaired group, 26 % of the participants had syndromic impairment while the other 74 % had asymptomatic neurocognitive impairment. We found a high prevalence of neurocognitive dysfunction in the Romanian young adults growing-up with HIV. The greatest HIV-related cognitive deficits were in the domains of executive and motor functioning, consistent with a frontosubcortical pattern.

An evaluation of prescribing practices for community-acquired pneumonia (CAP) in Mongolia

BACKGROUND

Community-acquired pneumonia (CAP) is a significant cause of morbidity and mortality in all age groups worldwide. It may be classified as mild/moderate or severe, the latter usually requiring hospitalisation. Although, there are many studies reported in relation to CAP, there is relatively little known about the treatment of CAP and its antibiotic use in Mongolia. The study aim was to evaluate prescribing practices for the treatment of mild/moderate CAP in Mongolia with respect to national prescribing guidelines.

METHODS

Written prescriptions with a written diagnosis of CAP included were collected prospectively and sequentially for ten weeks from a purposefully selected sample of community pharmacies in rural and urban areas of Mongolia. The data collected included the patient's age, gender, medication details, frequency and number of doses prescribed. Evaluation was with respect to the Mongolian Standard Treatment Guidelines (2005, 2008). Statistical differences between groups were tested using the Chi-squared and Fisher's exact tests.

RESULTS

Prescriptions were collected from 22 pharmacies and represented the prescribing practices of 118 doctors. The study enrolled 394 (193 adults and 201 children) patients, with a median age for children of 2.0 years (range: 0.03-12) and adults of 33.0 years (range: 13-92).The most commonly prescribed drugs were aminopenicillins, vitamins, and mucolytics, with the median number of drugs being three per prescription. Inappropriate drug selection was similar for adults (57.7%) and children (56.6%), and the major reason for an overall frequency of inappropriate prescribing for adults was 89.0% and for children 78.0%. Doctors in urban areas prescribed more inappropriate drugs than those in rural areas for both children and adults, p = .0014. The proportion of prescribed injections was 28.4% for adults and 9.0% for children, and for adults was significantly higher in urban areas. The prescribing standard for non-hospitalized patients in Mongolia states that injections should not be prescribed.

CONCLUSIONS

The high level of inappropriate prescribing for mild/moderate CAP highlights the need to develop comprehensive and reliable procedures nationwide to improve prescribing practices in Mongolia.

A review of evidence for transmission of HIV from children to breastfeeding women and implications for prevention

BACKGROUND

Child-to-breastfeeding woman transmission (CBWT) of HIV occurs when an HIV-infected infant transmits the virus to an HIV-uninfected woman through breastfeeding. Transmission likely occurs as a result of breastfeeding contact during a period of epithelial disruption, such as maternal skin fissures and/or infant stomatitis. Despite extensive epidemiologic and phylogenetic evidence, however, CBWT of HIV continues to be overlooked.

OBJECTIVE

This article summarizes the available evidence for CBWT from nosocomial outbreaks, during which nosocomially HIV-infected infants transmitted the virus to their mothers through breastfeeding. This article also explores the CBWT risk associated with HIV-infected orphans and their female caretakers, and the lack of guidance regarding CBWT prevention in infant feeding recommendations.

METHODS

We searched online databases including PubMed and ScienceDirect for English language articles published from January 1975 to January 2011 using the search terms "HIV," "perinatal," "child-to-mother" and "breastfeeding." The citations from all selected articles were reviewed for additional studies.

RESULTS

We identified 5 studies documenting cases of CBWT. Two studies contained data on the number of HIV-infected women, as well as the proportion breastfeeding. Rates of CBWT ranged from 40% to 60% among women reporting breastfeeding after their infants were infected.

CONCLUSIONS

Poor infection control practices, especially in areas of high HIV prevalence, have resulted in pediatric HIV infections and put breastfeeding women at risk for CBWT. Current infant feeding guidelines and HIV prevention messages do not address CBWT, and fail to provide strategies to help women reduce their risk of acquiring HIV during breastfeeding.

Phylodynamic and phylogeographic patterns of the HIV type 1 subtype F1 parenteral epidemic in Romania

In the late 1980s an HIV-1 epidemic emerged in Romania that was dominated by subtype F1. The main route of infection is believed to be parenteral transmission in children. We sequenced partial pol coding regions of 70 subtype F1 samples from children and adolescents from the PENTA-EPPICC network of which 67 were from Romania. Phylogenetic reconstruction using the sequences and other publically available global subtype F sequences showed that 79% of Romanian F1 sequences formed a statistically robust monophyletic cluster. The monophyletic cluster was epidemiologically linked to parenteral transmission in children. Coalescent-based analysis dated the origins of the parenteral epidemic to 1983 [1981-1987; 95% HPD]. The analysis also shows that the epidemic's effective population size has remained fairly constant since the early 1990s suggesting limited onward spread of the virus within the population. Furthermore, phylogeographic analysis suggests that the root location of the parenteral epidemic was Bucharest.

The evolving epidemiology of HIV/AIDS

Following its recognition in 1981, the HIV/AIDS epidemic has evolved to become the greatest challenge in global health, with some 34 million persons living with HIV worldwide. Early epidemiologic studies identified the major transmission routes of the virus before it was discovered, and enabled the implementation of prevention strategies. Although the first identified cases were in MSM in the United States and western Europe, the greatest impact of the epidemic has been in sub-Saharan Africa, where most of the transmission occurs between heterosexuals. Nine countries in southern Africa account for less than 2% of the world's population but now they represent about one third of global HIV infections. Where broadly implemented, HIV screening of donated blood and antiretroviral treatment (ART) of pregnant women have been highly effective in preventing transfusion-associated and perinatally acquired HIV, respectively. Access to sterile equipment has also been a successful intervention for injection drug users. Prevention of sexual transmission has been more difficult. Perhaps the greatest challenge in terms of prevention has been in the global community of MSM in which HIV remains endemic at high prevalence. The most promising interventions are male circumcision for prevention of female-to-male transmission and use of ART to reduce infectiousness, but the extent to which these interventions can be brought to scale will determine their population-level impact.

Phylodynamics of HIV-1 subtype F1 in Angola, Brazil and Romania

The HIV-1 subtype F1 is exceptionally prevalent in Angola, Brazil and Romania. The epidemiological context in which the spread of HIV occurred was highly variable from one country to another, mainly due to the existence of a long-term civil war in Angola and the contamination of a large number of children in Romania. Here we apply phylogenetic and Bayesian coalescent-based methods to reconstruct the phylodynamic patterns of HIV-1 subtype F1 in such different epidemiological settings. The phylogenetic analyses of HIV-1 subtype F1 pol sequences sampled worldwide confirmed that most sequences from Angola, Brazil and Romania segregated in country-specific monophyletic groups, while most subtype F1 sequences from Romanian children branched as a monophyletic sub-cluster (Romania-CH) nested within sequences from adults. The inferred time of the most recent common ancestor of the different subtype F1 clades were as follow: Angola=1983 (1978-1989), Brazil=1977 (1972-1981), Romania adults=1980 (1973-1987), and Romania-CH=1985 (1978-1989). All subtype F1 clades showed a demographic history best explained by a model of logistic population growth. Although the expansion phase of subtype F1 epidemic in Angola (mid 1980s to early 2000s) overlaps with the civil war period (1975-2002), the mean estimated growth rate of the Angolan F1 clade (0.49 year(-1)) was not exceptionally high, but quite similar to that estimated for the Brazilian (0.69 year(-1)) and Romanian adult (0.36 year(-1)) subtype F1 clades. The Romania-CH subtype F1 lineage, by contrast, displayed a short and explosive dissemination phase, with a median growth rate (2.47 year(-1)) much higher than that estimated for adult populations. This result supports the idea that the AIDS epidemic that affected the Romanian children was mainly caused by the spread of the HIV through highly efficient parenteral transmission networks, unlike adult populations where HIV is predominantly transmitted through sexual route.

Molecular typing of the recently expanding subtype B HIV-1 epidemic in Romania: evidence for local spread among MSMs in Bucharest area

HIV-1 subtype B is predominant in Europe except in some countries from Eastern Europe which are characterized by a high prevalence of non-B subtypes and circulating recombinant forms (CRFs). Romania is a particular case: the HIV-1 epidemic started with subtype F1 which is still the most prevalent. Previous studies have shown an increasing prevalence of subtype B which is the second most frequent one among the newly diagnosed individuals, followed by subtype C and several CRFs as well as unique recombinant forms (URFs). Our objective was to analyze in detail the characteristics (way of dispersal, association with transmission risk groups) of the subtype B infections in Romania by means of phylogenetic analysis. Among all the individuals sampled during 2003-2010, 71 out of 1127 patients (6.3%) have been identified to be infected with subtype B strains. The most frequent route of infection identified in HIV-1 subtype B patients in Romania was MSM transmission (39.6%), followed by the heterosexual route (35.2%). Many of the patients acquired the infection abroad, mainly in Western European countries. Phylogenetic analysis indicated the existence of a local transmission network (monophyletic clade) including 14 patients, mainly MSM living in the Bucharest area. We estimate the origin of the local transmission network that dates at the beginning of the 90s; the introduction of the F1 and C subtypes occurred earlier. The rest of the sequences were intermixed with reference strains sampled across Europe suggesting that single infection were not followed by subsequent dispersal within the local population. Although HIV-1 subtype B epidemic in Romania is recent, there is evidence for local spread among the MSMs, in addition to multiple introductions.

Syringe-mediated syndemics

One consequence of the global HIV/AIDS pandemic has been the emergence of a broad awareness of the potential role of syringes in the transmission of infectious diseases. In addition to HIV/AIDS, the use of unsterile syringes by multiple persons has been linked to the spread of Hepatitis B, Hepatitis C, Leishmaniasis, malaria and various other infections. The purpose of this paper is to extend awareness of the grave risks of multiperson syringe use by examining the role of this behavior in the development of infectious disease syndemics. The term syndemics refers to the clustering, often due to noxious social conditions, of two or more diseases in a population resulting in adverse disease synergies that impact human life and well-being. The contemporary appearance and spread of identified syringe-mediated syndemics, and the potential for the emergence of future syringe-mediated syndemics, both of which are reviewed in this paper, underline the importance of public health measures designed to limit syringe-related disease transmission.

Genomic detection of human immunodeficiency virus (HIV) by nucleic acid amplification test in a frequent platelet donor during the pre-seroconversion period

Since serological donor-screening tests for HIV were introduced in 1985, the safety of donated blood components has improved dramatically. However, these tests do not completely prevent the risk of transfusion-associated HIV infection related to the use of blood donated during the pre-seroconversion window period. Testing based on nucleic acid amplification is being implemented to screen for HIV-infected blood donated during this period, which has reduced the probability of transmitting HIV through transfusion by shortening the window period. This article describes a case of acute HIV-1 infection, detected using a nucleic acid amplification test (NAT) in a repeat blood donor who donated during the pre-seroconversion window period and whose antigen and anti-HIV antibody expression was observed after molecular marker detection. In addition, the possible route of infection is discussed based on the patient's history, and finally, the need for NAT technology for blood donor screening is emphasized.

Using phylogeography to characterize the origins of the HIV-1 subtype F epidemic in Romania

BACKGROUND

During the late 1980s and early 1990s, an estimated 10,000 Romanian children were infected with HIV-1 subtype F nosocomially through contaminated needles and blood transfusions. However, the geographic source and origins of this epidemic remain unclear.

METHODS

Here we used phylogenetic inference and "relaxed" molecular clock dating analysis to further characterize the Romanian HIV-1 subtype F epidemic.

RESULTS

These analyses revealed a major lineage of Romanian HIV sequences consisting nearly entirely of virus sampled from adolescents and children and a distinct cluster that included a much higher ratio of adult sequences. Divergence time estimates inferred the time of most recent common ancestor of subtype F1 sequences to be 1973 (1966-1980) and for all Angolan sequences to 1975 (1968-1980). The most common ancestor of the Romanian sequences was dated to 1978 (1972-1983) with pediatric and adolescent sequences interspersed throughout the lineage. The phylogenetic structure of the entire subtype F epidemic suggests that multiple introductions of subtype F into Romania occurred either from the Angolan epidemic or from more distant ancestors. Since the historical records note that the Romanian pediatric epidemic did not begin until the late 1980s, the inferred time of most recent common ancestor of the Romanian lineage of 1978 suggests that there were multiple introductions of subtype F occurred into the pediatric population from HIV already circulating in Romania.

CONCLUSIONS

Analysis of the subtype F HIV-1 epidemic in an historical context allows for a deeper appreciation of how the HIV pandemic has been influenced by socio-political events.

Drug use practices at pediatric hospitals of Khartoum State, Sudan

BACKGROUND

Irrational drug utilization is a major concern in developing countries. The World Health Organization (WHO) has developed first-level informative indicators in assessing drug use practices and encouraging improvement in the quality of patient care.

OBJECTIVE

To assess the current drug use practices in 4 pediatric teaching hospitals in Khartoum State, and to compare the results with studies conducted in Sudan and other developing countries.

METHODS

A descriptive, quantitative, and cross-sectional study using the WHO drug use indicators methodology was conducted in the outpatient settings of 4 pediatric hospitals. The study sample was selected using systematic random sampling. In each hospital, prescribing was assessed through a collection of 150 prescriptions, determination of consultation time and dispensing time for 150 patients, and by interview of 150 patients for the evaluation of dispensing practices and parents' knowledge.

RESULTS

The mean number of drugs prescribed per prescription was 2.0 (95% CI 1.9 to 2.1); 49.3% (95% CI 46.3 to 52.4) were prescribed by generic name, 81.3% (95% CI 77.9 to 84.3) of prescriptions involved an antibiotic, and 3.5% (95% CI 2.2 to 5.4) of prescriptions were in injection form. The mean consultation and dispensing times were 4.7 minutes (95% CI 4.4 to 5.1) and 28.2 seconds (95% CI 26.5 to 29.9), respectively. The percentage of drugs actually dispensed was 80.1% (95% CI 77.9 to 82.2), 55.7% (95% CI 52.0 to 59.4) of drugs were adequately labeled, and 83.5% (95% CI 80.2 to 86.3) of parents knew the correct dosage of all drugs dispensed for their children. The percentage of availability of key drugs was 81.3% (95% CI 77.1 to 84.9). The essential medicines list was not available at the 4 hospitals.

CONCLUSIONS

Our findings reveal problem areas in prescribing and dispensing practices in pediatric hospitals. Further in-depth quantitative research to answer the shortcomings of this study and cost-effective multifaceted interventions to improve current drug use practices are highly needed to secure the quality of medical care in pediatric hospitals.

Mother-to-child transmission of HIV infection in Romania: Results from an education and prevention programme

A pilot prevention of mother-to-child transmission (PMTCT) programme was implemented in Constanta County, Romania, between 2000 and 2002. The programme consisted of clinician training, routine antenatal HIV counselling and testing and the care of HIV-infected pregnant women and their infants. A total of 11,423 pregnant women (10,192 (89%) white Europeans, 862 (7.5%) Rroma, 369 (3.2%) Central Asians) were tested during the pilot, at a median of 24 weeks' gestation. Rapid HIV testing at delivery was introduced during the pilot, to supplement the antenatal testing, both of which required informed consent. Overall seroprevalence was 1.75 per 1,000 (95% confidence interval (CI) 1.07-2.70 per 1,000). HIV infection was associated with having a high-risk partner, prostitution and non-Caucasian ethnicity. Twelve infected women completed their pregnancies, of whom seven received antenatal antiretroviral therapy (ART); all neonates received prophylactic ART and five were delivered by elective caesarean section. Three infants were HIV-infected, giving a vertical transmission rate of 25% (95% CI 5.49-57.2%); all three were born to mothers not identified as infected until delivery, and who therefore received no antenatal ART. A key challenge for PMTCT in Romania will be the prompt identification of pregnant HIV-infected women, to allow the optimum application of interventions.

Diversity of HIV-1 subtype C strains isolated in Romania

Two unique aspects particularities of the HIV-1 epidemics in Romania are the high prevalence of subtype F1 strains and the large pediatric population infected in the late 1980s and early 1990s. During recent years, more infections with other subtypes have been seen in newly diagnosed patients. After subtype B, subtype C was the most frequent one. This subtype is prevalent in countries from sub-Saharan Africa and India, being responsible for half of the total HIV-1 infections in the world. We have identified 37 patients infected with subtype C, sequenced the reverse transcriptase and protease regions of their pol genes, and applied phylogenetic analyses to the sequences. We have also included 20 subtype F1 strains isolated from both teenagers (children at the time of diagnosis) and adults. The phylogenetic analysis was performed by using the PhyML method, the GTR (general time reversible) model of evolution and gamma distribution of variability of rates between sites, empirically calculated from the data. The epidemiological data indicates that the main route of transmission for the adult subjects was by heterosexual contact and a relatively small number of patients were possibly infected abroad. In three cases, blood transfusion prior to 1989 or surgical procedures at early ages were suspected to be the cause of the HIV infection and three other patients were most probably parenterally infected. The phylogenetic analyses showed that the Romanian C strains are very diverse overall, clustered in several groups characterized by common transmission route (transfusion/surgical procedures) or local geographical relatedness. The HIV-1 epidemics in Romania apparently followed different patterns for subtypes F and C. While subtype F1 seems to have been monoclonally introduced and extensively spread in the 80s, the subtype C strains, although present in the late 80s, failed to spread to the same extent.

Nonvertical, nonsexual transmission of human immunodeficiency virus in children

In a cohort of 450 human immunodeficiency virus (HIV)-infected children followed up in Maputo, Mozambique, 22 were born to HIV-uninfected mothers and had no history of sexual abuse. A case record review of these nonvertically, nonsexually infected children as well as a case-control study strongly suggests health care as possible source of infection for many of these children. This facet of the pediatric HIV epidemic should not be overlooked.

[A 17 year old adolescent with chronic neutropenia, recurrent infections, severe dysphagia and peroneus palsy]

A 17-year-old German adolescent with a four year history of neutropenia and repeated infections presented with severe dysphagia and progressive right-sided peroneus palsy. In the past four years, extensive medical workup had been performed, and despite conspicuous findings, no diagnosis was made. Finally we diagnosed HIV related CMV esophagitis and HIV associated polyneuropathy. The CMV esophagitis was treated antivirally, and highly active antiretroviral HIV therapy was initiated. The mode of HIV transmission remained obscure until further research revealed a probable nosocomial infection during early childhood in Romania.

Influence of social changes on the evolution of HIV infection in Romania

The Romanian HIV epidemic started and evolved as a paediatric one, accounting for more than a quarter of the total European juvenile AIDS cases. In response to this major AIDS outbreak, emphasis was placed on the patient's treatment, by implementation of a free, universal access program of Highly Active AntiRetroviral Therapy. This approach has been highly successful, and has greatly increased the rate of survival in infected children. Nevertheless, these children are now teenagers or young adults, representing a large cohort of "long term survivors"- a unique population that represent a great challenge for the public health system and for their integration in the civil society. As the number of HIV infected adults is increasing, new high-risk behaviour groups, as well as vulnerable populations (young people, people living in poverty, Rroma community) need to be reached in prevention programs. This article explores the impact of the socio-economic changes on the evolution of the HIV epidemic in Romania and speculates about the factors that might drive future increases in the incidence of HIV infections.

HIV-positive Romanian adolescents: acquisition routes, risk behaviors, and psychological correlates

This research evaluated risk behaviors in HIV-positive adolescents (N = 153) receiving routine HIV medical care from their providers at a large medical center in Bucharest, Romania. Although the participants were of an appropriate age (M = 15.94 years) to have acquired HIV as one of the large numbers of pediatric AIDS cases during Ceauşescu's Communist regime, many (20%) reported acquiring HIV sexually, relatively recently. The sample as a whole exhibited significant deficits in HIV knowledge, attitude, subjective norm, perceived control, and intention; significant risk behavior also appeared in terms of reports of unprotected intercourse with both HIV-positive and -negative partners. These results imply a change in the epidemiological model for HIV transmission in Romania, with increased sexual transmission of HIV. Discussion centers on interpretations of these patterns and drawing implications for HIV risk reduction for young people in Romania.

Risk factors for hepatitis C virus infection among blood donors in Israel: a case-control study between native Israelis and immigrants from the former Soviet Union

BACKGROUND

The annual hepatitis C virus (HCV) seropositivity prevalence among blood donors (BDs) in Israel is 0.1 percent. Although only 10 percent of the BD population are immigrants from the former Soviet Union (FSUIs), they represent 80 percent of the HCV-seropositive cases. This study aimed to identify HCV risk factors among Native Israeli (NI) and FSUI BDs, to determine if specific interventions are needed.

STUDY DESIGN AND METHODS

Two case-control studies were designed, interviewing 178 HCV-positive cases (128 FSUIs, 50 NIs) and 256 HCV-negative controls (128 FSUIs, 128 NIs). All participants were volunteer BDs of Magen David Adom (MDA) Blood Services.

RESULTS

A total of 434 BDs of 985 mailed letters consented to be interviewed (44% response rate), without differences in compliance between the study populations. In both, intravenous drug use (IVDU) was the strongest HCV seropositivity-associated risk factor. After IVDU adjustment, important risk factors were age, blood transfusion before 1990, first-time donation, and not practicing teeth cleaning. Close contact with people at risk for HCV (odds ratio [OR], 7.2; 95% confidence interval [CI], 1.9-27.8) and surgery (OR, 7.3; 95% CI, 1.6-34.4) were strong risk factors among NIs, whereas gum surgery (OR, 7.6; 95% CI, 1.1-52.3), hospitalization without surgery (OR, 2.6; 95% CI, 1.1-6.5), and therapy in injection form (OR, 4.9; 95% CI, 2.4-10.2) were merely found among FSUIs, probably resulting from inadequate aseptic conditions. The ORs for age, gum surgery, contact index, and first blood donation differed significantly between the two populations.

CONCLUSION

Although the strength of risk factors for HCV differs between Israeli and immigrant BDs, most factors studied did not differ between the groups. Therefore, changes in screening of all BDs are considered.

Efficiency of human immunodeficiency virus transmission through injections and other medical procedures: evidence, estimates, and unfinished business

OBJECTIVE

To estimate the transmission efficiency of human immunodeficiency virus (HIV) through medical injections and other invasive procedures.

DESIGN

We searched our own files and Medline (from 1966-2004, using the keywords ["iatrogenic" or "nosocomial" or "injections"] and "HIV") for reports of iatrogenic outbreaks worldwide, except outbreaks traced to receipt of contaminated blood or blood products. We also analyzed information from a case-control study of percutaneous exposures to healthcare workers.

SETTING

Worldwide healthcare settings. EVENTS: We identified 8 iatrogenic outbreaks that met our study criteria; published information from 4 outbreaks was sufficient to estimate transmission efficiency.

RESULTS

From the 4 documented iatrogenic outbreaks, we estimated that 1 iatrogenic infection occurred after 8-52 procedures involving HIV-infected persons. Although only 0.3% of healthcare workers seroconvert after percutaneous exposure, a case-control study reported that deep injuries and other risk factors collectively increased seroconversion risk by as much as 50 times. Laboratory investigations demonstrate HIV survival through time and various rinsing regimens. We estimate that the transmission efficiency in medical settings with no or grossly insufficient efforts to clean equipment ranges from 0.5% to 3% for lower risk procedures (eg, intramuscular injections) and from 10% to 20% or more for high-risk procedures. Efforts to clean equipment, short of sterilization, may cut the transmission efficiency by 0%-100%. Procedures that contaminate multidose vials may accelerate transmission efficiency.

CONCLUSION

To achieve better estimates of the transmission efficiency for a range of medical procedures and settings, investigations of iatrogenic outbreaks should be accorded high priority.

Epidemiology and management of infectious diseases in international adoptees

International adoptees represent a group of children with unique health care needs. Data from published studies, along with the recent experience of the Yale International Adoption Clinic, suggest that the risk of serious infections in adoptees is low, although infections associated with institutionalization still occur commonly. Interpretation of these data must be undertaken with caution, however, since many, if not most, international adoptees are not evaluated in specialty clinics. Thus, prospective studies designed to minimize selection and referral bias are needed in order to accurately define the risk of infectious and noninfectious diseases in all international adoptees.

High prevalence of hepatitis B virus markers in romanian adolescents with human immunodeficiency virus infection

Background

We evaluated the frequency of hepatitis coinfection in Romanian adolescents who were diagnosed with human immunodeficiency virus (HIV) infection prior to 1995.

Methods

One hundred sixty-one adolescents (13–18 years of age) with symptomatic HIV infection, but without signs of hepatic dysfunction, and 356 age-matched, HIV-uninfected controls underwent laboratory testing for markers of parenterally acquired hepatitis virus infection.

Results

Seventy-eight percent of HIV-infected adolescents had markers of past or present hepatitis B virus (HBV) infection, as compared with 32% of controls (P = .0001). The prevalence of HBV replicative markers was more than 5-fold higher in HIV-infected adolescents as compared with controls: 43.4% vs 7.9% (P = .0001), respectively, for hepatitis B surface antigen (HBsAg); and 11.2% vs 2.2% (P = .0001), respectively, for hepatitis B e antigen (HBeAg). The prevalence of HBsAg chronic carriers and the presence of HBV replicative markers was significantly higher in patients with immunologically defined AIDS (CD4+ cell counts < 200 cells/mcL): 59.6% vs 34.6% (P = .02) for HBsAg and 22.8% vs 5.7%, (P = .002) for HBV DNA. After 1 year of follow-up, the proportion of those who cleared the HBeAg was considerably lower in severely immunosuppressed coinfected patients: 4.7% vs 37.1% (P = .003). Four additional HIV-infected adolescents became HBsAg-positive over the term of follow-up (incidence rate, 24.9/1000 person-years), despite a record of immunization against hepatitis B.

Conclusion

A substantial percentage of HIV-infected and HIV-uninfected Romanian adolescents have evidence of past or present HBV infection. In HIV-infected adolescents, the degree of immunosuppression is correlated with persistence of HBV replicative markers, even in the absence of clinical or biochemical signs of liver disease.

Evaluating infection control practices among dentists in Vâlcea, Romania, in 1998

OBJECTIVES

To evaluate infection control knowledge and practices, provide training on universal-standard precautions (USP), and improve infection control knowledge and practices among dentists.

SETTING

Private and public dental offices in Vâlcea, Romania.

METHODS

Information about the use of hepatitis B vaccine, knowledge of and training in USP, perceived risks of disease transmission, and infection control practices was gathered from a sample of dentists through interviews, direct observations, and a survey administered during a training session.

RESULTS

Interviews among dentists and direct observations of infection control practices revealed that resources were often scarce in public clinics; however, availability of supplies in private or public clinics often did not correlate with adherence to proper infection control. Of 125 registered dentists, 46 (37%) attended the session and completed the survey. Of these, 75% worked in public clinics, 40% in private practices, and a few in both. More than 50% believed that the prevalence of hepatitis B virus (HBV) was low in their patients compared with the Romanian population. Only 26% of dentists had received hepatitis B vaccine. Dentists reported a mean of six percutaneous injuries a year. Most (89%) reported that gloves were effective in preventing HBV transmission; 24% wore them for every patient. Most used dry heat sterilization; however, chemical disinfectants were also used.

CONCLUSIONS

Resources were limited, receipt of hepatitis vaccine was low, and infection control knowledge and practices varied. Training and education are needed regarding the importance of USP, hepatitis B vaccination, and alternative practices when resources are insufficient.

Injection practices in Romania: progress and challenges

OBJECTIVE

To identify breaks in infection control practices that might put Romanians at risk for transmission of hepatitis B virus (HBV) from injections.

METHODS

A standardized questionnaire was administered to a systematic sample of the 1,906 nurses in Vâlcea District, Romania, to collect information on their knowledge, attitudes, and practices regarding injection administration and universal precautions.

RESULTS

Of the 180 nurses interviewed, 91% (95% confidence interval [CI95], 86% to 95%) reported having attended training for universal precautions; 58% (CI95, 49% to 67%) accurately reported that HBV remains infectious for at least 1 week in the environment; and 4% (CI95, 2% to 8%) knew that HBV is transmitted more efficiently than HIV through percutaneous exposures. No nurses reported reusing syringes or needles on different patients, but 4 (2%; CI, 1% to 6%) would reuse a syringe and 3 (2%; CI95, 0% to 5%) would reuse a needle on the same patient in an emergency. Fifty-three percent (CI95, 44% to 61%) of nurses reported having a dedicated area for the preparation of injectable medications separate from where blood-contaminated items were handled. Shortages of infection control supplies were common.

CONCLUSIONS

Although nurses in Vâlcea do not report reusing injection equipment without sterilization, other unsafe practices occur that may facilitate HBV transmission through injections, including preparing injectable medications in areas potentially contaminated with blood. Inadequate knowledge of blood-borne pathogen transmission and shortages of infection control supplies may contribute to these unsafe practices. Addressing these deficits could improve injection safety in Romania.

HIV type 1 diversity in northeastern Romania in 200-2001 based on phylogenic analysis of pol sequences from patient failing antiretroviral therapy

Protease and the first half of reverse transcriptase from 71 Romanian patients failing highly active antiretroviral therapy (HAART) have been sequenced and phylogenetically analyzed. These analyses show that 70 patients were infected with subtype F1 and one with subtype C. The pattern of drug resistance mutations in subtype F1-infected patients failing HAART is similar to that described for subtype B strains. These results show that the diversity pattern of HIV type 1 infection in Romania has remained steady over a decade, with subtype F1 remaining the predominant viral form. The circulation of subtype F1 in Romania has the potential to be a source of this HIV-1 subtype in Europe..

Use of injections in healthcare settings worldwide, 2000: literature review and regional estimates

OBJECTIVE

To describe injection practices worldwide in terms of frequency and safety.

DESIGN

Literature review. The global burden of disease project of the World Health Organization defined 14 regions on the basis of geography and mortality patterns. Data sources included published studies and unpublished WHO reports. Studies were reviewed by using a standardised decision making algorithm to generate region specific estimates.

SETTING

Healthcare facilities, both formal and informal.

DATA SOURCES

General population and users of healthcare facilities.

MAIN OUTCOME MEASURE

Annual number of injections per person and proportion of injections administered with syringes or needles, or both, reused in the absence of sterilisation.

RESULTS

The analysis excluded four regions (predominantly affluent, developed nations) where reuse of injection equipment in the absence of sterilisation was assumed to be negligible. In the 10 other regions, the annual ratio of injections per person ranged from 1.7 to 11.3. Of these, the proportion administered with equipment reused in the absence of sterilisation ranged from 1.2% to 75.0%. Reuse was highest in the South East Asia region "D" (seven countries, mostly located in South Asia), the eastern Mediterranean region "D" (nine countries, mostly located in the Middle East crescent), and the western Pacific region "B" (22 countries). No information regarding injection safety was available for Latin America.

CONCLUSIONS

Overuse of injections and unsafe practices are still common in developing and transitional countries. An urgent need exists to use injections safely and appropriately, to prevent healthcare associated infections with HIV and other bloodborne pathogens.

Ensuring injection safety during measles immunization campaigns: more than auto-disable syringes and safety boxes

Measles immunization campaigns are effective elements of a comprehensive strategy for preventing measles cases and deaths. However, if immunizations are not properly administered or if immunization waste products are not safely managed, there is the potential to transmit bloodborne pathogens (e.g., human immunodeficiency virus and hepatitis B and hepatitis C). A safe injection can be defined as one that results in no harm to the recipient, the vaccinator, and the surrounding community. Proper equipment, such as the exclusive use of auto-disable syringes and safety boxes, is necessary, but these alone are not sufficient to ensure injection safety in immunization campaigns. Equally important are careful planning and managerial activities that include policy and strategy development, financing, budgeting, logistics, training, supervision, and monitoring. The key elements that must be in place to ensure injection safety in measles immunization campaigns are outlined.

HIV in central and eastern Europe

We describe recent trends in the HIV epidemic and the differences between eastern and central Europe, using surveillance data, and published and unpublished reports. During the past 5 years, most countries of the former Soviet Union have been severely affected by HIV epidemics that continue to spread as a result of injecting drug use. With an estimated 1 million individuals already infected--mostly injecting drug users--and high rates of syphilis, the region may soon also face a large-scale epidemic of sexually-transmitted HIV infection. Indeed, data indicate that an HIV epidemic, fuelled by heterosexual transmission, is emerging; its expansion will depend on the size of so-called bridge populations that link high-risk groups with the general population. The lack of evidence to indicate increased rates of HIV as a result of homosexual transmission could indicate the social vulnerability of homosexual and bisexual men in the region rather than the true epidemiological picture. In view of the current levels of HIV prevalence, eastern Europe will soon be confronted with a major AIDS epidemic. By contrast, rates of HIV in central Europe remain low at present, but behaviours that promote HIV transmission are present in all countries. Improved measures to prevent further HIV spread are urgently needed.

HIV-1 subtypes in Luxembourg, 1983-2000

OBJECTIVES

To study the prevalence of HIV-1 subtypes in Luxembourg between 1983 and 2000. To compare the drug susceptibility of non-B and B clade viruses and the prevalence of resistance-associated mutations and polymorphisms before antiretroviral treatment.

DESIGN

A retrospective study on plasma samples of HIV-infected patients registered at the National Service of Infectious Diseases, Luxembourg, between 1983 and 2000.

METHODS

Genotyping was performed by sequencing of the reverse transcriptase (RT) and protease coding region of the pol gene. Drug susceptibility was assessed in a recombinant virus assay.

RESULTS

A total of 20.1% of the HIV-positive patients were infected with non-B subtypes, and since 1990 the proportion of non-B viruses has increased ninefold. Eleven out of 14 F1 subtypes occurred in patients native to Luxembourg. Major resistance mutations related to protease inhibitors (PI), nucleoside reverse transcriptase inhibitors (NRTI) and non-nucleoside reverse transcriptase inhibitors (NNRTI) occurred in less than 3% of treatment-naive viruses; however, 87% of the viruses had at least one PI-associated mutation. Natural polymorphism of the protease and RT coding region was observed more frequently among non-B than B viruses. Significantly more B viruses displayed resistance to the tested PI, NRTI and NNRTI (P = 0.044).

CONCLUSION

The proportion of non-B viruses has increased dramatically since 1990. Non-B subtypes showed no decreased susceptibility to antiretroviral drugs, but displayed minor mutations and polymorphisms at higher frequency in their protease and RT coding region. In contrast, a significantly higher proportion of B viruses showed resistance to a range of antiretroviral drugs.

Transmission of HIV in the dental clinic and elsewhere

This review focuses on the risk of transmission of HIV in dental practice in developed and developing countries; and as a result of oral sex, perinatal transmission and breast feeding. Postexposure prophylaxis (PEP) and practical measures to control cross-infection with TB are also discussed. There are few data from resource-poor countries where prevalence of HIV and risk of infection are higher--issues that deserve priority. Available information indicates that the risk of HIV transmission in the dental office is very low. Transmission of HIV from three healthcare workers to patients has been confirmed, including a dentist who infected six patients. There are >300 reports (102 confirmed) of occupational transmission to healthcare workers, including nine dental workers (unconfirmed). Exposure to HIV has been reported by 0.5% dentists/year. The risk of HIV infection after percutaneous exposure (0.3%) can be reduced by 81% with zidovudine PEP. However, risk assessment is required to assess the need and appropriate regimen. The risk of HIV transmission associated with orogenital sex exists, but is considered extremely low: barrier protection is recommended. Conversely, the proportion of babies who acquire HIV from untreated HIV-seropositive mothers is 15-25% in developed countries and 25-45% in developing countries. The frequency of HIV transmission attributable to breastfeeding is 16%. Airborne transmission of TB can be avoided by the prompt referral of known/suspected cases of active TB for chemotherapy, deferral of elective procedures until patients are not infectious, and the use of appropriate standard/isolation precautions including adequate ventilation of treatment areas.

The burden of pediatric HIV/AIDS in Constanta, Romania: a cross-sectional study

BACKGROUND

By 1990, 94 percent of the acquired immunodeficiency syndrome (AIDS) cases in Romania were in children less than 13 years of age. The majority of the cases were identified in the city of Constanta. The purpose of this paper was to describe the current burden of pediatric human immunodeficiency virus (HIV) infection in the Constanta county.

METHODS

A cross-sectional study was designed to address the primary objective. Between April 1999 and March 2000, all living cases of pediatric HIV infection in the Constanta county were identified from records at the HIV hospital clinic which serves the Constanta county. Standard demographic, social, clinical, treatment and hospitalization data were collected for each study subject. Data were analyzed according to cross-sectional study design methodology.

RESULTS

Of the 762 subjects, the majority were seven to 11 years of age, lived with their parents and attended school. Only 70% of the fathers and 13% of the mothers were employed. Horizontal transmission accounted for 90% of the cases. Most of the children had moderate to severe disease as indicated by their AIDS-defining signs; 40% had AIDS. Less than half of the children were receiving antiretroviral therapy (ART). ART and children of mothers with a high school or greater education were independent predictors of long-term non-progression of HIV disease.

CONCLUSIONS

This cross-sectional study demonstrated that ten years after the HIV epidemic was identified in Romania, it remains a health and economic burden. The infected children are very ill, but ART is not available for all. The proportion with vertical transmission has increased from an estimated four % to nine %. Our findings support the need to get HIV therapy to economically challenged countries such as Romania.

Global impact of human immunodeficiency virus and AIDS

This review provides information on the epidemiology, economic impact, and intervention strategies for the human immunodeficiency virus (HIV)/AIDS pandemic in developing countries. According to the World Health Organization and the Joint United Nations Programme on HIV/AIDS (UNAIDS) at the end of 1999, an estimated 34.3 million people were living with HIV/AIDS. Most of the people living with HIV, 95% of the global total, live in developing countries. Examples of the impact of HIV/AIDS in Africa, Asia, Latin America, the Caribbean, and the Newly Independent States provide insight into the demographics, modes of exposure, treatment and prevention options, and the economic effect of the epidemic on the global community. The epidemic in each region of the world is influenced by the specific risk factors that are associated with the spread of HIV/AIDS and the responses that have evolved to address it. These influences are important in developing HIV/AIDS policies and programs to effectively address the global pandemic.

Therapeutic injections in Pakistan: from the patients' perspective

OBJECTIVE

To investigate the behaviour, knowledge of risks, and attitudes towards injections among patients at a clinic in Karachi.

METHODS

In March 1995, trained staff administered a structured questionnaire to 198 consecutive new adult patients attending a university clinic in Karachi, Pakistan.

RESULTS

Half (97:49%) of the patients received injections at their last visit to a health care provider. 3.5% had received 10 or more injections in the last year. 64% felt that injections were more powerful and were willing to pay more for them than for pills. 84% preferred pills or advice over injections if told they were equally effective, 83% believed that a used needle could transmit a fatal disease, and 86% believed that it is usually possible to get better without an injection. 91% reported that the doctor always recommends an injection; few patients (9%) ever asked for one. Injections were given without much regard for the chief complaint of the patient. Sonic needles (n = 21) for the injection came from bowls of water: of those from closed packets (n = 116), 68 were 'cleaned' by wiping ot placing them in water. 91% of patients (180) knew at least one risk of reuse of needles. Patients who knew three or more risks of using unclean needles were 0.14 times as likely to have had more than five injections per year in the last 5 years hut only if the patients had s or more years of education.

CONCLUSION

Patients receive injections from doctors in Pakistan frequently, indiscriminately and often without proper safety precautions. They are aware of both positive and negative aspects of injections but are likely to do what the doctor suggests. Interventions to reduce risky overuse of injections should focus on patients' general education and knowledge of the risks of injections to empower them to choose healthier therapies.

Genetic evidence of multiple transmissions of HIV type 1 subtype F within Romania from adult blood donors to children

We studied the phylogeny of HIV-1 subtype F viruses from children and adults in Romania in order to (1) clarify whether the Romanian subtype F epidemic was caused by one or several virus introductions and (2) gain insight into the route of spread of the HIV-1 subtype F virus among children and adults in Romania. env (V3), gag (p17/half p24), and pol (prot/half RT) sequences were obtained from three districts in Romania: Tirgu Mures (n = 9, children), Craiova (n = 15, children), and Bucharest (n = 13, adults). Of 37 HIV V3 sequences from Romania, 35 belonged to the genetic subtype F in the neighbor-joining tree, whereas 2 sequences from adults clustered with subtypes A and C. Within the subtype F cluster, no bootstrap-supported subclusters were observed according to geographic area in Romania. Two of the adult V3 sequences that clustered with the children were obtained from individuals who tested HIV seropositive in 1989 and 1990, showing that the subtype F virus was present among adults when the HIV epidemic began among children in Romania. The HIV-1 subtype F viruses obtained from children showed a mean pairwise V3 nucleotide distance of 7.9% and maximum distances of between 18 and 19%; both are higher than previously described. The mean V3 distances (overall, synonymous, and nonsynonymous) were significantly higher for adults than for children. One V3 sequence from the Democratic Republic of Congo clustered within the Romanian sequences, suggesting that the subtype F virus in Romania may originate from this area. Our data also suggest that HIV-1 subtype F was present among Romanian adults before it appeared in 1989 among institutionalized children. The juvenile population was most likely infected with the HIV-1 subtype F virus on more than one occasion, presumably through HIV-contaminated blood (products) obtained from adults.

Are orphans at increased risk of malnutrition in Malawi?

The objective of this study was to compare the nutritional status and health problems of village orphans, non-orphans and orphanage children, and to identify factors associated with undernutrition. A cross-sectional study was conducted in three orphanages and two villages near Blantyre, Malawi. Seventy-six orphanage children, 137 village orphans and 80 village non-orphans were recruited. Anthropometric measurement was done and guardians were interviewed. In the group of children aged < 5 years, the prevalence of undernutrition in orphanage children was 54.8% compared with 33.3% and 30% of village orphans and non-orphans, respectively. Sixty-four per cent of young orphanage children were stunted compared with 50% of village orphans and 46.4% of non-orphans. The mean (SD) Z-score of height/age was significantly lower in the orphanage group, -2.75 (1.29) compared with -2.20 (1.51) and -1.61 (1.57) in the village orphan and non-orphan groups (p < 0.05). Conversely, older orphanage children (> or = 5 years) were less stunted and wasted than orphans and non-orphans in villages. Illness of children in the last month was reported to be higher in the non-orphan group, especially diarrhoeal disease, which occurred in 30% compared with 10.8% of village orphans and 6.6% of orphanage children. More than three children in a family being cared for by guardians was significantly associated with undernutrition. Orphanage girls were more likely to be malnourished than orphanage boys. Children who had been admitted to an orphanage for more than a year were less malnourished. In village orphans, there was no association between undernutrition and duration of stay in extended families. Age and education of guardians were not associated with the nutritional status of children. We conclude that young orphanage children are more likely to be undernourished and more stunted than village children. Older orphanage children seem to have better nutrition than village orphans. There was no significant difference in nutritional status between village orphans and non-orphans.