Correlation of the basic reproduction number ( R 0 ) and eco-environmental variables in Colombian municipalities with chikungunya outbreaks during 2014-2016

by V íctor Hugo Peña-García, Rebecca C. Christofferson Chikungunya virus (CHIKV) emerged in Colombia in 2014 into a population presumed fully susceptible. This resulted in a quick and intense spread across Colombia, resulting in an epidemic that affected an estimated 450,000 people. The reported Colombian cases accounted for over 49% of all the cases reported to the PAHO. Eco-environmental factors are known to be associated with the spread of arboviruses such as CHIKV, and likely contribute to the differences in transmission profiles that were observed across several municipalities. To determine the association of eco-environmental factors and C HIKV, the basic reproduction number (R0) in 85 municipalities, which accounted for 65.6% of reported CHIKV cases in Colombia, was estimated. Estimates ofR0 ranged from 1 to 9, where over 76% of municipalities hadR0 values between 1 and 2. When we looked at the distribution ofR0, the cumulative proportions were 20% withR0>2, 14% withR0>3, and 9% withR0>4. Next, we determined that there were different patterns of correlation between environmental and/or ecological variables andR0 when we considered differentR0 lower-thresholds. Broadly, we found that temperature-related variables are significantly and positively correlated toR0 regardless of the lower threshold, while other variables like duration of outbreak and size of the urban area are inversely related toR0. Specifically, we conclude that high values ...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research

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Source: Infection, Genetics and Evolution - Category: Genetics & Stem Cells Authors: Tags: Infect Genet Evol Source Type: research
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Source: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz - Category: International Medicine & Public Health Authors: Tags: Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz Source Type: research
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Source: The American Journal of Tropical Medicine and Hygiene - Category: Tropical Medicine Authors: Tags: Am J Trop Med Hyg Source Type: research
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Source: Revista da Sociedade Brasileira de Medicina Tropical - Category: Tropical Medicine Source Type: research
Hurricane Dorian’s 185 mph winds and punishingly slow pace smashed entire neighborhoods in the Bahamas, killing at least 50 people. But now, Bahamians are facing a different kind of threat. The lack of access to toilets, clean water and medications puts tens of thousands at risk for disease, public health experts warn. Bahamians in the hardest-hit areas are already suffering from cuts and gashes caused by widespread debris and wreckage. But now aid groups are saying survivors are beginning to show signs of gastrointestinal issues from contaminated water. Those with chronic illnesses are struggling without access to t...
Source: TIME: Health - Category: Consumer Health News Authors: Tags: Uncategorized Bahamas Infectious Disease onetime weather Source Type: news
CONCLUSION: This study identified an asymptomatic ZIKV infection in a blood donor occurring before those previously recognized by blood donation screening. NAT and PR continue to be used as acceptable strategies to prevent transfusion-transmitted arboviral infections worldwide; however, repeated arboviral outbreaks warrant consideration of PR as a more proactive approach. PMID: 31407817 [PubMed - as supplied by publisher]
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Source: Acta Tropica - Category: Infectious Diseases Authors: Tags: Acta Trop Source Type: research
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Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
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Source: Infection, Genetics and Evolution - Category: Genetics & Stem Cells Authors: Tags: Infect Genet Evol Source Type: research
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