Excess mortality during the COVID-19 pandemic in Algeria: The case of Oran Province

Objective

This study aimed to estimate excess mortality during the COVID-19 pandemic in Oran between March 2020 and December 2022.

Method

Monthly all-cause data used to estimate excess mortality were modeled against the pre-pandemic period (January 2011-February 2020). Excess mortality between March 2020 and December 2022 was estimated using a quasi-Poisson regression. Analyses were stratified by age group.

Results

From March 2020 to December 2022, there was a 30% excess mortality rate, corresponding to an average of 112 monthly excess deaths. Observed numbers of deaths were higher than expected for the age groups 20–39, 40–59, 60–79, and 80 and above. The age group 0–19 did not show excess mortality.

Conclusion

The COVID-19 pandemic has been associated with a significant increase in all-cause mortality in Oran. Our results highlight the importance of monitoring all-cause excess mortality as an indicator of the disease burden in situations such as the current pandemic.

Seroprevalence of COVID-19 in Oran: Cross-Sectional Study

The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was introduced in Algeria in March 2020. This study aimed to estimate the seroprevalence of SARS-CoV-2 infection in Oran, Algeria, and to identify factors associated with seropositivity. This was a cross-sectional seroprevalence study conducted between 7 and 20 January 2021 across all 26 municipalities in the province of Oran. The study employed a random cluster sampling technique stratified by age and sex to select participants from households, who were then administered a rapid serological test. The overall seroprevalence and specific seroprevalences by municipality were calculated, and the number of COVID-19 cases in Oran was estimated. The correlation between population density and seroprevalence was also examined. Among the participants, 422 (35.6%; 95% confidence interval [CI], 32.9 to 38.4) had a positive serological test for SARS-CoV-2, and eight municipalities had seroprevalence rates above 73%. We found a strong positive correlation between population density and seroprevalence (r = 0.795, P < 0.001), indicating that areas with higher population density had higher numbers of positive COVID-19 cases. Our study provides evidence of a high seroprevalence of SARS-CoV-2 infection in Oran, Algeria. The estimated number of cases based on seroprevalence is much higher than the number of cases confirmed by PCR. Our findings suggest that a large proportion of the population has been infected with SARS-CoV-2, highlighting the need for continued surveillance and control measures to prevent further spread of the virus. IMPORTANCE This is the first and only seroprevalence study of COVID-19 conducted in the general population in Algeria prior to the national vaccination campaign against COVID-19. The significance of this study lies in its contribution to our understanding of the spread of the virus in the population before the implementation of the vaccination program.

Assisted Reproductive Technology in Western Algeria

Infertility is a major public health problem that Assisted reproductive technology (ART) helps remedying, allowing infertile couples realizing their parental project. In Algeria, the infertility rate is about 15%. Thereupon, several ART national centers have emerged. The aim of this study is to evaluate the ART activities, provide quantified data to understand the ART practice in western Algeria and compare our results abroad. We conducted a retrospective study on 1930 women treated for an ART at the EL MAWLOUD fertility center in Oran from January 1, 2019 to December 31, 2020. Our study showed the patients' average age as 33.42 and the ICSI as the commonest ART technique in our center with 90% frequency. The pregnancy rate equals 26.59% by insemination in IUI, and 41.25 % by puncture in IVF and ICSI, i.e. an average success rate similar in Europe and USA. This study elucidates the use of ART techniques (2019-2020) in western Algeria. They are satisfactory in our region compared to international data in the literature. However, ART remains embryonic in Algeria, regarding mainly the exorbitant prices of these techniques and the non-reimbursement of this act by the National Social Security Fund, which handicaps couples with medium and low incomes.

[Time trends and age-period-cohort effects on the incidence of the most frequent cancers in Oran, Algeria, 1999-2018]

BACKGROUND

Cancer is currently one of the major public health problems in Algeria. The aim of this study was to examine time trends and the effects of age, period and cohort on incidence at the major cancer locations from 1999 to 2018 in Oran, Algeria.

METHODS

Data on the five most frequent primary cancer locations among patients aged 20-79 years were collected from the Oran cancer registry. Annual percentile changes in incidence rates were evaluated using the Joinpoint regression program. Age-period-cohort models were designed to examine the effects of age, period and birth cohort on cancer incidence.

RESULTS

From 1999 to 2018, there were 12,278 incident cases at the five major cancer locations. Unfavorable trends in incidence were observed regarding lung and colorectal cancers in both sexes, as well as breast cancer in women. Age-period-cohort analysis showed that age, period and birth cohort yielded different effects at different cancer locations.

CONCLUSION

The observed trends primarily reflect lifestyle changes in Algeria over the course of recent years.

[Comorbidity schizophrenia and diabetes mellitus in Algeria - A study of risk factors]

BACKGROUND

The combination of schizophrenia and diabetes mellitus presents a public health problem in the world. Several studies have been carried out for the analysis of this comorbidity, including prognostic factors.

OBJECTIVE

The objective of our study is to determine the risk factors associated with the comorbidity schizophrenia and diabetes mellitus.

METHODS

From a sample of 200 cases of schizophrenic patients hospitalized at the Sidi Chami psychiatric hospital of Oran in Algeria, we carried out a descriptive transversal and analytical study during the period of one year.

RESULTS

Our results are consistent with those of the different studies carried out in neighboring countries. Among the risk factors recorded in our study, we mention the age of 40 and over, divorce, dyslipidemia, high blood pressure, overweight and severe and moderate obesity, the age of schizophrenia of 30 to 40 years, the first-generation neuroleptic treatment and family history related to diabetes. While the male sex, celibacy and second-generation neuroleptics were found in the study as protective factors against the onset of diabetes mellitus in schizophrenic patients.

CONCLUSION

The factors associated with comorbidity schizophrenia and type 2 diabetes are manifold. These factors must be taken into account when introducing preventive behaviors that must be multidisciplinary in order to ensure better patient care.

Consanguinity and epilepsy in Oran, Algeria: A case-control study

PURPOSE

The goal of this case-control study was to identify the significance of consanguinity and other risk factors for epilepsy in Oran, Algeria.

METHODS

Unrelated epileptic patients upwards of 16 years, who attended the Neurology Department between October 2013 and March 2014 were included in the study. Controls, matched for age and sex, were selected among non-epileptic patients attending the same department during the same period. The risk factors evaluated were: consanguinity, family history of epilepsy, perinatal complications, infection of the central nervous system, mental retardation, neurological impairment, history of febrile seizures, severe head trauma, cerebrovascular diseases, and addiction.

RESULTS

101 cases and 202 controls participated in the study. Multivariate logistic regression identified five factors significantly associated with epilepsy: first-degree of consanguinity (odds ratio (OR)=2.15), history of epilepsy in first-degree relatives (OR=4.03), antecedent of febrile seizures (OR=5.38), severe head injury (OR=2.94) and mental retardation (OR=9.32).

CONCLUSION

Consanguinity, family history of epilepsy, history of febrile seizures, severe head trauma and mental retardation are risk factors for epilepsy. The implementation of a strategy for prevention and awareness of the impact of consanguineous marriages as well as genetic counseling for couples with a family history of epilepsy are needed.

[Factors associated with poor blood pressure control in 253 treated hypertensive patients]

INTRODUCTION

Hypertension is a major public health problem throughout the world. The blood pressure control and the decrease of global cardiovascular risk are two main goals of the treatment of hypertension. The purpose of this study was to determine the proportion and associated factors of uncontrolled hypertension in hypertensive patients followed by private cardiologists in Oran.

MATERIALS AND METHODS

This study included 253 hypertensive patients followed by 7 private cardiologists in Oran. Was regarded as uncontrolled high blood pressure, a systolic blood pressure (SBP) superior or equal to 140 mmHg and/, or a diastolic blood pressure (DBP) superior or equal to 90 mmHg. A logistic regression analysis was performed to determine the associated factors with poor blood pressure control.

RESULTS

The proportion of uncontrolled hypertension was 69.6 % (75.8 % of men and 65.8 % of women). Using multivariate analysis, poor blood pressure control was found to be associated with salt consumption (ORa=2.71; CI 95 %=[1.42-5.18]).

CONCLUSION

Nutritional actions are required for better blood pressure control.