A new study suggests that warm, humid temperatures may help reduce the spread of COVID-9.
The study found that places with prolonged warm temperatures and sunlight, such as countries closer to the equator and those who experienced the summer, had lower rates of COVID-19 cases compared to countries further from the equator and those with. The weather is colder
The findings were held even after researchers took into account other factors that could affect both the spread of COVID-19 and the number of reported cases, such as the urbanization level of the country and the severity of the COVID-19 spread. Test for COVID-19
However, the authors emphasize that their findings do not mean that summer weather will eliminate COVID-19, but it could make people resist disease.
“Our results do not indicate that the disease will go away in the summer or it will not affect countries closer to the equator,” the authors wrote in their article, published in the journal on. 27 April Scientific reportBut the higher the temperature and the stronger the UV[[[[ultraviolet]Summer radiation is likely to support public health measures to prevent SARS-COV-2.
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Shortly after the COVID-19 outbreak began in the winter of 2020, it was speculated that summer temperatures could provide relief from COVID-19. Influenza virusShow seasonal patterns Peak in winter And dipped in summer
Scientists don’t know exactly why these viruses follow seasonal patterns. But there are factors that play a role. For example, studies suggest that many respiratory viruses are more stable and stay in the air longer in environments with cold temperatures and low humidity. Live Science previously reported.Human behavior, such as gathering together in a home in winter, can also increase transmission.
Studies in laboratory food have also found that high temperatures and humidity reduce the survival of SARS-COV-2, but does this mean whether real-world transmission is unclear?
In the new study, researchers analyzed data from 117 countries using COVID-19 epidemic data from the time of the epidemic to January 9, 2021.They used a statistical method to examine the relationship between the country’s latitudes, which Affect The amount of sunlight exposure, as well as temperature and humidity – and the spread of COVID-19, they also used data from the World Health Organization to control factors that could affect the severity of COVID-19 in countries, such as: Air travel, healthcare costs, ratio of the elderly to the young, and economic development.
They found that every 1 degree increase in the country’s latitude from the equator was associated with a 4.3% increase in COVID-19 cases per million people. This means that if one country is closer to the equator than 620 miles (1,000 kilometers) compared to another, the country closer to the equator could have 33% fewer COVID-19 cases per million people, all other factors. International equality
“Our results are consistent with the assumption that heat and sunlight reduce the spread of
SARS-CoV-2 and COVID-19 prevalence, ”according to the authors of the Heidelberg Institute of Global Health in Germany and the Chinese Academy of Medical Sciences in Beijing. “Threats from the return of the epidemic may Rose in winter “As seen in many countries in the Northern Hemisphere in December 2020 and January 2021.
The authors note that their study only included data up to January 9, 2021, prior to the introduction of COVID-19 multiple strains, including the first strains in South Africa and the UK, had been conducted around the world. Therefore, it is not clear which of these species. Will show similar patterns of seasonal infections.
Originally published in Live Science.