Studies suggest that the prevalence of some diseases are determined by climatic factors. By
far, it has been proven that some respiratory infections occur due to climate. For instance, the
Institute for Health Metrics and Evaluation unfolds that health impacts and deaths from
extreme heat are increasing, and these effects are expected to grow as global temperatures
continue to rise. Besides, very recently, WHO’s Director General has addressed that climate
change has become a serious issue causing many losses of lives. In that regard, it can be
asserted, if not claimed, that climate appears to be the next challenge of the global health
It has been observed that people are prone to infections with changes in the climatic conditions. This has been shown by a study conducted by the National Data Management and Analytics Centre for Health, at the Ethiopian Public Health Institute. At the beginning, the study hypothesised that climatic conditions would, actually, bring an impact on the transmission rate of the COVID-19 pandemic. In that regard, it aimed to evaluate the effects of climatic factors such as temperature, rainfall, relative humidity, sunshine duration, and wind speed on the number of daily COVID-19 cases.
Geographically, the study was delimited to Addis Ababa (the capital city of Ethiopia). And methodologically, the study employed the log-link negative binomial regression model to fit the effect of climatic factors on COVID-19 transmission, from lag 0 to lag 14 days, as well as the Spearman’s rank correlation test to summarise the strength and direction of a relationship between two variables.
During the study period, a total of 245,101 COVID-19 cases were recorded in Addis Ababa, with a median of 337 new cases per day and a maximum of 1903 instances per day. As a result, a significant correlation between COVID-19 cases and humidity was observed with a 1% increase in relative humidity associated with a 1.1% [IRRs (95%CI) 0.989, 95% (0.97–0.99)] and 1.2% [IRRs (95%CI) 0.988, (0.97–0.99)] decrease in COVID-19 cases for 4 and 5 lag days prior to detection, respectively. The highest increase in the effect of wind speed and rainfall on COVID-19 was observed at 14 lag days prior to detection with IRRs of 1.85 (95%CI 1.26–2.74) and 1.078 (95%CI 1.04–1.12), respectively.
However, the findings revealed that none of the climatic variables affected the number of COVID-19 cases on the day of case detection (lag 0). Besides, it has been witnessed that daily average temperature and the duration of sunshine were not significantly linked with the risks of being caught with COVID-19 across the full lag period (p > 0.05).
Figure. Daily variation of sunshine duration and (a) Average daily temperature, (b) Rainfall, (c) Relative humidity, (d) Wind speed and (e) Sunshine duration from 10 May 2020 to 31 October 2021 in Addis Ababa Contrary to that, however, climatic factors such as humidity, rainfall, and wind speed influence the transmission of COVID-19 in Addis Ababa, Ethiopia. COVID-19 cases have shown seasonal variations with the highest number of cases reported during the rainy season and the lowest number of cases reported during the dry season. Hence, the study has
suggested that policy makers need to design strategies to combat the pandemic which are aligned with climate conditions.
Find the complete article with the link below:
For further references about the study use the contact below.
Fitsum Bekele Endashaw
E-mail: firstname.lastname@example.org or email@example.com