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Report: Warm Weather May Not Reduce Coronavirus Transmission as Previously Assumed

© REUTERS / Alissa Eckert, MS; Dan Higgins, MAM/CDC/Handout The ultrastructural morphology exhibited by the 2019 Novel Coronavirus (2019-nCoV), which was identified as the cause of an outbreak of respiratory illness first detected in Wuhan, China, is seen in an illustration released by the Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia, U.S. January 29, 2020
The ultrastructural morphology exhibited by the 2019 Novel Coronavirus (2019-nCoV), which was identified as the cause of an outbreak of respiratory illness first detected in Wuhan, China, is seen in an illustration released by the Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia, U.S. January 29, 2020 - Sputnik International
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The US nonprofit organization National Academies of Sciences released a report to the White House on Tuesday predicting that the summer’s warmer temperatures would not significantly halt the spread of the COVID-19 coronavirus.

According to the study, which was performed by members of the academies’ Standing Committee on Emerging Infectious Diseases and 21st Century Health Threats, the effects of heat and humidity on COVID-19 are inconclusive. The scientists thus warned that the conclusion that summer temperatures would stop the spread of the virus should be “interpreted with caution.”

“There is some evidence to suggest that SARS-CoV-2 may transmit less efficiently in environments with higher ambient temperature and humidity; however, given the lack of host immunity globally, this reduction in transmission efficiency may not lead to a significant reduction in disease spread,” the report notes.

“Although the experimental studies show a relationship between higher temperatures and humidity levels, and reduced survival of SARS-CoV-2 in the laboratory, there are many other factors besides environmental temperature, humidity and survival outside of the host, that influence and determine the transmission rates among humans in the ‘real world,’” the report adds.

In addition, the researchers revealed that respiratory illnesses similar to COVID-19, including severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS), do not appear to have any “evidence of seasonality,” which means that they don’t thrive during certain parts of the year.

“Given that countries currently in ‘summer’ climates, such as Australia and Iran, are experiencing rapid virus spread, a decrease in cases with increases in humidity and temperature elsewhere should not be assumed,” the researchers concluded.

There have been conflicting reports on the effects of weather on the coronavirus. A study published on March 10 by Chinese researchers concluded that high temperatures and humidity could reduce the transmission of COVID-19.

The coronavirus has infected nearly 1.6 million people and led to the deaths of more than 95,000 people worldwide, according to the latest data by Worldometer.

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