They are most contagious in the course of the first four days of symptoms. Unlike cold viruses, influenza virus kills the protective cells that help sweep germs out of the airways. This makes it much easier for pneumonia-inflicting micro organism to invade the lungs. Pneumococcus is likely one of the most common causes of bacterial pneumonia and is preventable by each influenza vaccine and pneumococcal vaccine.
What are widespread signs of the flu?
Flu is a serious infection that affects between 5-20{4605891ea247c1b3544901749054d58a4774ad726c9970c37b7697756df937fd} of the US population yearly. Each year within the US, tens of millions of individuals get sick, hundreds …