Social and environmental factors behind the low number of coronavirus cases in Africa

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The herald

Corresponding
The transmission of COVID-19 in Africa has been marked by a relatively lower number of infections, which have declined over the past two months, due to various socio-ecological factors as well as early and strong public health measures taken by governments in the region. .

The pandemic has largely affected a younger age group and has been more pronounced in a few countries, suggesting that aspects specific to each country are behind the pattern of morbidity and mortality. About 91% of Covid-19 infections in sub-Saharan Africa are in people under the age of 60, and more than 80% of cases are asymptomatic.

A mixture of socio-ecological factors such as low population density and mobility, hot and humid climate, lower age group, interacting to accentuate their individual effects, probably contribute to the pattern observed in Africa.

Since July 20, the region has seen a steady decline in new cases of Covid-19. In the past four weeks, 77,147 new cases have been reported, compared to 131,647 recorded in the previous four weeks.

Some of the worst affected countries, including Algeria, Cameroon, Cote d’Ivoire, Ethiopia, Ghana, Kenya, Madagascar, Nigeria, Senegal and South Africa, have all seen the infections decrease every week for the past two months. Deaths attributed to Covid-19 also remained low in the region.

“The downward trend we have seen in Africa over the past two months is undoubtedly a positive development and a testament to the robust and decisive public health measures taken by governments in the region,” said Dr Matshidiso Moeti , regional manager of the World Health Organization (WHO). Africa Director.

“But we must not become complacent. Other parts of the world have seen similar trends only to find that as social and public health measures are relaxed, cases start to rise again. “

As governments have made efforts to improve testing for Covid-19, recent tests have dropped from a total of 74 tests per 10,000 people in 44 countries assessed on August 23, 2020 to 93 per 10,000 people on September 21, 2020 , the level is still mooing.

Nonetheless, the region’s testing statistics have been useful for policy as they reflect infection patterns in a country, and missed Covid-19 cases are largely because they are asymptomatic. In addition, there is no evidence of miscalculation of the death figures, which are more difficult to ignore statistically.

“Africa has not experienced an exponential spread of Covid-19 as many initially feared,” Dr Moeti said. “But the slower spread of infection in the region means we expect the pandemic to continue to smolder for some time, with occasional flare-ups.”

In recent weeks, Cameroon and Côte d’Ivoire, which are among the countries that have recorded a drop in infections since mid-July, have seen a slight increase in cases. It is crucial that countries maintain public health measures that have helped curb the spread of Covid-19 to limit new infections and deaths.

“The response in African countries needs to be tailored to each country’s situation in the future, as we see different patterns of infection even within a country. Targeted and localized responses based on what works best in a given region of a country will be crucial as countries ease restrictions and open up their economies. Comprehensive regional or country approaches are not feasible, ”said Dr Moeti.

WHO continues to support countries to scale up the public health response, especially in high-risk areas.

The number of coronavirus disease cases in the WHO African Region is now 1,149,940 with 25,008 deaths.

Since the 29 external situation report published on September 16, 2020, a total of 29,218 new confirmed cases of Covid-19 and 764 new deaths have been reported in 45 countries between September 16 and 22, 2020.

This represents a 2% and 17% decrease in incidence cases and deaths, respectively, from the 29,710 cases and 921 deaths recorded in the previous reporting period (September 9-16, 2020).

The incidence of cases has continued to decline in recent weeks, with South Africa consistently recording the highest number of reported cases for many weeks. However, a 6 percent increase in the number of cases has been noted in South Africa over the past seven days. – WHO.


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