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location Switzerland
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visits member for 1 year, 7 months
seen Jan 25 '13 at 1:59

Dec
17
comment Why does the cold make us sick?
"a virus must be considerably more stable in colder air" -- yes, it is. see the links above. low humidity also plays a role.
Dec
16
awarded  Teacher
Dec
16
answered Why does the cold make us sick?