Some evidence suggests that hot and humid weather correlates with a slower spread of the coronavirus, but it is still unclear if temperature-related changes can slow the pandemic.
Does Coronavirus survive in hot weather?
According to a recent MIT report released in March, areas with average temperatures between 3° C and 13° C (37° F and 55° F), had the biggest number of coronavirus confirmed cases. While countries with a temperature above 18° C (64° F), made up less than 5% of total reported cases.
Similarly, European researchers said that they found 95% of cases worldwide in colder areas. China’s hot and humid cities experienced slower transmission rates than the colder ones.
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Other researchers found that the virus spread more forcefully in areas between 5° C and 11° C (41° F and 52° F), along with an average humidity rate between 50% and 80%. But none of these papers have been peer-reviewed.
And factors like access to quality medical care, government action testing rates, the density of an area’s population, and other principal factors in coronavirus transmission were not taken into consideration.
Many studies have shown humidity affects the transmission of the flu. But SARS was only contained because of government interventions and not because of warm weather or higher humidity levels.
Coronavirus spreads similarly like the influenza virus as small mucus droplets spread in the air. Researchers suggest that viruses lose infectivity because the particles lose structural integrity.
Therefore, knowing how the droplets evolve in different temperatures and humidity conditions, can tell us more about how infectious it can get. Seasonal circumstances could contribute to a slower spread of viruses in warmer times of the year.
These include school breaks, having more personal space, spending more time outdoors, and having higher levels of vitamin D from sunshine.
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