In addition to the article that appeared in the "British Medical Journal", which attributes the increase in deaths in winter to the cold and not the flu, another study published in the "American Journal of Epidemiology", signed by researchers at Johns Hopkins University, indicates that the population in the southern United States is more vulnerable to the effects of cold, which causes an increase in mortality, while those in the north suffer more from the effects of heat.
They analyzed the relationship between latitude and temperature on mortality in 11 large cities between 1973 and 1994 to verify that extreme temperatures, both due to heat and cold, increase mortality rates, especially in the elderly, homeless and those affected by respiratory disease. .
Related Websites
The Johns Hopkins University
http://www.jhu.edu/
American Journal of Epidemiology
http://aje.oupjournals.org/
