Climate impact, according to one study, is far more limited than government action

Climate impact, according to one study, is far more limited than government action

According to a study published in the journal Nurse, government measures to combat the transmission of SARS-Cove-2 are five times more likely to be affected by temperature changes.

The study focused on the period from January to April 2020, which may help prevent variants or even vaccination campaigns from distorting the results. More than 400 cities or geographical regions from 26 countries were observed in both hemispheres. These institutions together accounted for 44% of all notices of virus infection during this period (according to data from Johns Hopkins University).

On the one hand, the researchers defined the effective regeneration rate (suitable for socio-cultural bias, density, GDP, etc.) and analyzed climate change (temperature, humidity, wind, sunlight, rainfall). They examined the impact of these climate changes on fertility rates and the impact of government measures (Oxford Covid-19 Government Response Track Assessed – OxCGRT).


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Their work shows that temperature changes (+ 10 ° c), like humidity (2%), have a moderate effect on the reproduction rate (2.4%). No sunlight, no wind speed, no rain. According to the authors, the relationship between SARS-Cove-2 temperature, humidity, and transmission can be explained by three direct and indirect mechanisms: First, these variables limit the ability of the virus to survive on surfaces and aerosols. Second, the human immune system is modified over time (e.g., they are weak in terms of vitamin D deficiency or brightness), and eventually very low or very high temperatures can cause the population to spend more time. In limited spaces, this increases the chances of transmission.

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On the other hand, it comes out of the analysis of government measures that when the Oxford index goes from the minimum range to the maximum, it will affect the fertility rate by up to 13.8%.

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