ONCE YOU GET THE FLU, CAN YOU GET IT AGAIN?
What is flu? Flu is a contagious respiratory illness. It can be mild or severe. The disease is caused by influenza viruses and spread mainly from person to person through coughing or sneezing by...
What is flu? Flu is a contagious respiratory illness. It can be mild or severe. The disease is caused by influenza viruses and spread mainly from person to person through coughing or sneezing by...