Cold and Flu
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The flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death.
Pneumonia is an infection in the lungs caused by bacteria called Streptococcus pneumoniae, which can infect the upper respiratory tracts and can spread.
Scarlet fever is a disease caused by a bacteria called group A streptococcus, the same bacteria that causes strep throat. Scarlet fever is a rash that sometimes occurs in people that have strep throat.