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Abstract
PURPOSE OF REVIEW Colorectal cancer (CRC) remains the third most commonly diagnosed cancer globally, and its incidence and mortality rates have been on the rise in Asia. In this paper, we summarize the recent trends and screening challenges of CRC in this region. RECENT FINDINGS In 2018, Asia had the highest proportions of both incident (51.8%) and mortality (52.4%) CRC cases (all genders and ages) per 100,000 population in the world. In addition, there has been a rising trend of this disease across Asia with some regional geographic variations. This rise in CRC can be attributed to westernized dietary lifestyle, increasing population aging, smoking, physical inactivity, and other risk factors. In curbing the rising trend, Japan, South Korea, Singapore, and Taiwan have launched nationwide population-based screening programs. CRC screening across this region has been found to be effective and cost-effective compared with no screening at all. The emergence of new therapies has caused a reduction in case fatality; however, these new options have had a limited impact on cure rates and long-term survival due to the great disparity in treatment capacity/resources and screening infrastructures among Asian countries with different degrees of economic development. CRC is still rising in Asia, and implementation of screening is necessary for moderate- to high-incidence countries and construction of treatment capacity is the priority task in low-incidence and low-income countries. Unless countries in Asia implement CRC screening, the incidence and mortality rates of this disease will continue to rise especially with the rapidly rising population growth, economic development, westernized lifestyle, and increasing aging.
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Affiliation(s)
- Elias F Onyoh
- Institute of Epidemiology and Preventive Medicine, National Taiwan University, Taipei, Taiwan
- AIDS Care and Prevention Program, Cameroon Baptist Convention Health Services, Bamenda, Cameroon
- Taiwanese Colorectal Cancer Screening Program, Taipei, Taiwan
| | - Wen-Feng Hsu
- Taiwanese Colorectal Cancer Screening Program, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, No. 7 Chung-Shan South Road, Taipei, Taiwan
| | - Li-Chun Chang
- Department of Internal Medicine, National Taiwan University Hospital, No. 7 Chung-Shan South Road, Taipei, Taiwan
| | - Yi-Chia Lee
- Taiwanese Colorectal Cancer Screening Program, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, No. 7 Chung-Shan South Road, Taipei, Taiwan
| | - Ming-Shiang Wu
- Department of Internal Medicine, National Taiwan University Hospital, No. 7 Chung-Shan South Road, Taipei, Taiwan
| | - Han-Mo Chiu
- Taiwanese Colorectal Cancer Screening Program, Taipei, Taiwan.
- Department of Internal Medicine, College of Medicine, National Taiwan University Hospital, No. 7 Chung-Shan South Road, Taipei, Taiwan.
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Onyoh EF, Kuaban C, Lin HH. Pre-treatment loss to follow-up of pulmonary tuberculosis patients in two regions of Cameroon. Int J Tuberc Lung Dis 2019; 22:378-384. [PMID: 29562984 DOI: 10.5588/ijtld.17.0676] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING Thirty-nine tuberculosis diagnosis and treatment units (DTUs) in the North-West and South-West Regions of Cameroon. OBJECTIVE To determine the proportion of pre-treatment loss to follow-up (PLTFU) of bacteriologically confirmed pulmonary tuberculosis (PTB) patients and its risk factors. DESIGN A retrospective cohort study was conducted to retrieve information from the TB laboratory and treatment registers for all bacteriologically confirmed PTB patients diagnosed in the 39 DTUs during the last 6 months of 2015. PLTFU was defined as failure to initiate treatment within 7 days of diagnosis. RESULTS Among 1174 bacteriologically confirmed PTB cases, the proportion of PLTFU was 16.7% (95%CI 14.7-18.9). In the multivariable logistic regression model, travelling >30 km to the DTU was a risk factor for PLTFU (adjusted odds ratio [aOR] 2.31, 95%CI 1.63-3.27) compared with travelling 30 km. Travelling for >30 min to the DTU (aOR 2.19, 95%CI 1.56-3.09) and an urban location of DTU (aOR 2.51, 95%CI 1.51-4.17) were also significant risk factors for PLTFU. CONCLUSION PLTFU among TB patients remains a significant issue despite the availability of free anti-tuberculosis treatment in Cameroon. Diagnosed patients should be promptly and carefully linked to a treatment unit for treatment initiation.
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Affiliation(s)
- E F Onyoh
- Institute of Epidemiology and Preventive Medicine, National Taiwan University, Taipei City, Taiwan, AIDS Care and Prevention Program, Cameroon Baptist Convention Health Services
| | - C Kuaban
- Faculty of Health Sciences, University of Bamenda, Cameroon
| | - H-H Lin
- Institute of Epidemiology and Preventive Medicine, National Taiwan University, Taipei City, Taiwan
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Bate A, Kimbi HK, Lum E, Lehman LG, Onyoh EF, Ndip LM, Njabi CM, Tonga C, B Wempnje G, Ndip RN, Bessong PO. Malaria infection and anaemia in HIV-infected children in Mutengene, Southwest Cameroon: a cross sectional study. BMC Infect Dis 2016; 16:523. [PMID: 27682438 PMCID: PMC5041210 DOI: 10.1186/s12879-016-1853-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 09/20/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Malaria is one of the leading causes of morbidity and mortality in children and HIV infection as well as other factors may worsen the situation. This study was aimed at determining the factors influencing malaria parasite prevalence and density as well as anaemia in HIV-infected children in Mutengene, Cameroon from November, 2012 to April, 2013. METHODS A semi-structured questionnaire was used to record information on socio-demographic factors and use of preventive measures by caregivers of HIV-infected children aged 1-15 years and of both sexes. Venous blood was collected; blood films were prepared and Giemsa-stained for parasite detection and speciation. Haemoglobin concentration was measured and the anaemic status determined. Data was analysed using Epi Info 7 software. RESULTS A total of 234 children were studied. The overall malaria parasite prevalence was 24.8 % (58) and was significantly higher (31.9 %, P = 0 .004) in females, those who did not implement any preventive measure at all (66.7 %, P = 0.03) and children who used antiretroviral therapy (ART) (28.6 %, P = 0.02) when compared with their respective counterparts. Geometric mean parasite density (GMPD) was significantly higher (3098.4, P = 0.02) in children who presented with fever, had CD4 T cells ≥500 cells/μL (491.3, P = 0.003) and those with moderate anaemia (1658.8, P = 0.03) than their respective counterparts. Although there was no significant difference, GMPD was however higher in males (549.0); those not on ART (635.0) and highest in children <5 years old (633.0) than their respective counterparts. The overall prevalence of anaemia was 49.6 % (116). The value was significantly highest (58.3 %, P = 0.01) in the 11-15 years age group; those with CD4 T cell level 200-499 (72.7 %, P = 0.001) and children with fever (85.7 %, P = 0.01). CONCLUSION Implementation of proper and integrated malaria preventive measures as well as frequent monitoring of anaemia on prescription of ART could likely improve the health conditions of HIV-infected children thus avoiding malaria-related morbidity and mortality.
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Affiliation(s)
- Ayukenchengamba Bate
- Department of Zoology and Animal Physiology, Faculty of Science, University of Buea, P.O. Box 63, Buea, SWR, Cameroon.
| | - Helen K Kimbi
- Department of Zoology and Animal Physiology, Faculty of Science, University of Buea, P.O. Box 63, Buea, SWR, Cameroon.,Department of Medical Laboratory Sciences, Faculty of Health Sciences, University of Bamenda, Bamenda, P.O. Box 39, Bambili, NWR, Cameroon
| | - Emmaculate Lum
- Department of Zoology and Animal Physiology, Faculty of Science, University of Buea, P.O. Box 63, Buea, SWR, Cameroon.,Department of Biological Sciences, Higher Teachers' Training College, University of Yaounde I, P.O. Box 47, Yaounde, Centre Region, Cameroon
| | - Leopold G Lehman
- Department of Animal Biology, Faculty of Science, University of Douala, P.O. Box 2701, Douala, Littoral Region, Cameroon
| | - Elias F Onyoh
- AIDS Care and Prevention Program, Cameroon Baptist Convention Health Services, Bamenda, Cameroon.,Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Lucy M Ndip
- Department of Microbiology and Parasitology, Faculty of Science, University of Buea, P.O. Box 63, Buea, SWR, Cameroon
| | - Conica M Njabi
- Department of Zoology and Animal Physiology, Faculty of Science, University of Buea, P.O. Box 63, Buea, SWR, Cameroon
| | - Calvin Tonga
- Department of Animal Biology, Faculty of Science, University of Douala, P.O. Box 2701, Douala, Littoral Region, Cameroon
| | - Godlove B Wempnje
- Department of Zoology and Animal Physiology, Faculty of Science, University of Buea, P.O. Box 63, Buea, SWR, Cameroon
| | - Roland N Ndip
- Department of Microbiology and Parasitology, Faculty of Science, University of Buea, P.O. Box 63, Buea, SWR, Cameroon.,Department of Biochemistry and Microbiology, Faculty of Science and Agriculture, University of Fort Hare, PMB X1314, Alice, 5700, South Africa
| | - Pascal O Bessong
- HIV/AIDS and Global Health Research Programme, Department of Microbiology, University of Venda, Thohoyandou, 0950, South Africa
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Zoufaly A, Onyoh EF, Tih PM, Awasom CN, Feldt T. High prevalence of hepatitis B and syphilis co-infections among HIV patients initiating antiretroviral therapy in the north-west region of Cameroon. Int J STD AIDS 2013; 23:435-8. [PMID: 22807539 DOI: 10.1258/ijsa.2011.011279] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Hepatitis B virus (HBV) and syphilis co-infections contribute significantly to HIV-associated morbidity and mortality, but the burden of these diseases is not fully appreciated in sub-Saharan Africa, as prevalence data are scarce. Both infections often remain undiagnosed in resource-limited settings because routine testing is not a part of most of the national guidelines. Epidemiological studies provide important information on prevalence and risk factors for such co-infections and can provide guidance for clinical management and for the development of test strategies. We analysed data on baseline characteristics, CD4 cell counts, HBV and syphilis co-infection rates of 690 patients enrolling for antiretroviral therapy in rural Cameroon. The prevalence of both hepatitis B surface antigen (HBsAg, 12.6%, 95% CI 10.1-15.1) and treponemal antibodies (11.4%, 95% CI 8.9-13.7) was high, with significantly higher prevalences for both infections in men; detection of treponemal antibodies increased with age. Although liver enzyme elevations were common, they were not useful to identify HBsAg-positive patients. In this setting, routine serological screening for HBV and syphilis co-infection should be considered to avoid complications and ongoing transmission.
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Affiliation(s)
- A Zoufaly
- University Medical Center Hamburg, Department of Medicine/Infectious Diseases Unit, Martinistrasse 52, Hamburg 20251, Germany.
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