While the data so far regarding the impact of temperature on the spread of coronavirus remains inconclusive, a new Greek study appears to indicate that transmission of the virus in countries with high temperatures is lower.
The study is being conducted by the Pulmonary Clinic of the University of Thessaly, with pulmonologist Professor Konstantinos Gourgoulianis as coordinator and Dr Ourania Kotsiou as lead researcher, in collaboration with the Metsovo Center for Interdisciplinary Research of the National Technical University of Athens and the Department of Business Administration of the University of Patras.
“We found a clear impact of temperature on the rate of disease spread, as countries with lower temperatures and particularly with average temperatures of 0-18°C have a faster rate of new cases of Covid-19 per day, and a higher total number of confirmed cases compared to countries with higher average temperatures,” Gourgoulianis told the state-run Athens-Macedonian News Agency (ANA).
“According to our analysis, the effect of temperature appears to be independent of the time of the first outbreak and the population density. Of course, the final number of outbreaks depends significantly on the measures taken to prevent the spread of the virus, as well as the different ways of recording cases, which must be taken into account.”
Many studies, the professor said, suggest that the cold favors the survival and spread of coronaviruses. “The main factors that underpin the theory of seasonality in the spread of viral epidemics are the increase in: (a) synchronicity that enhances transmission, (b) the vulnerability of the human body, and (c) the stability of viral particles in the environment during the winter months. Previous studies have found a rapid decline in the survival of coronaviruses that caused the MERS and SARS-CoV epidemics at higher temperatures.” [ANA-MPA]