but what does that mean for COVID-19?

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It seems less and less likely that the coronavirus has a preference for winter weather conditions.

Flu and cold viruses thrive in winter. And it is feared that the same applies to SARS-CoV-2. The fact that the virus spread around the world in the winter months and the number of infections by the summer decreased, seems to support that. However, since lockdowns and corona measures were implemented during the period when temperatures and humidity rose, it is impossible to say with certainty that the decrease in contamination we saw during the same period is related to changing weather conditions. Moreover, despite summer temperatures, the number of infections is now increasing again in many countries. It suggests that the corona measures – which have been relaxed in many countries and are being followed less strictly in more and more places – leave a bigger mark on the number of infections than weather conditions.

This is the opinion of the World Health Organization (WHO). Earlier this week, WHO spokesperson Dr Margaret Harris said that SARS-CoV-2 is most likely not a seasonal virus. She points out, among other things, that the vast majority of infections now occur in the US, where it is currently the middle of summer. The number of infections is also increasing rapidly in warm Brazil.

“The seasons don’t seem to affect the transmission of the virus,” said Harris. “What affects transmission is mass gatherings, people who come together and keep no distance and take no precautions.”

Scientists have been trying for months to find an answer to the question whether SARS-CoV-2 – like the flu virus, for example – is seasonal and thrives better in winter than in summer. It results in ambiguous studies. This is what Australian research suggests that the virus spreads more easily at lower humidity. While a chinese investigation points out again that the coronavirus thrives better at both lower humidity and lower temperature. Meanwhile, another Chinese study again suggested that temperature, but also humidity and UV radiation hardly affects the spread of the virus.

The contradictory results can probably be explained by the fact that it is particularly difficult to distinguish the effect that weather conditions have on the virus from the effect that other factors – such as the aforementioned corona measures – have on the spread of the virus. What also does not help is that the virus has only been known to us since the end of last year and that we have therefore not seen it in action during all seasons.

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Very important
Although it is difficult to investigate, it is still very important to determine whether the virus is even played in the map by certain weather conditions, says professor Jürg Luterbacher, associated with the World Meteorological Organization (WMO). “It is very important that we understand which meteorological, climatic and environmental …read more

Source:: World Today News


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