The cold and flu season arises in winter. One common phenomenon:
catching a chill can bring about the flu.
In 2015, a Yale University study solved the mystery:
Temperature is a key factor in virus infections.
Viruses replicate faster at cooler temperatures.
The varying temperatures influence the immune responses of humans rather than the viruses themselves.
The information came from the following study:
Temperature-dependent innate defense against the common cold virus limits viral replication at warm temperature in mouse airway cells,
Foxman EF. et al.,
PNAS, 2015, 112(3):827-832
In 2005, a UK study submerged healthy people’s feet into ice cold water and found the cold exposure caused an upper-respiratory infection.
The information came from the following study:
Cold viruses thrive in frosty conditions
Icy temperatures chill the immune response that thwarts the common cold
Beth Mole
Nature news, 20 May 2013
The Coronavirus can upper respiratory tract infections.
Hot drinks can warm the respiratory tract and
prevent coronavirus infections.
Hot chicken soup is “traditional Penicillin” for the cold.
Warm temperatures in spring are Mother Nature’s solutions to
control virus infections.
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