Cold and flu symptoms resemble each other, but they differ in intensity. A cold generally starts out with some minor sniffling and sneezing, but the flu hits you all at once. You're fine one hour and in bed the next. A cold rarely moves into the...
The common cold is a virus infection of the upper respiratory tract. There are many different strains of virus which can cause cold symptoms, and these are constantly mutating. While the mucous membranes of the nose and throat are inflamed as a...