The virus, which is the smallest living organisms. Contact I-Cham snot usually is in the air. When we are oppressed or cold weather, bacterial infections and flu. A flu virus infections that cause respiratory diseases.
A virus Which is the smallest creatures. Coughing, sneezing, runny nose contact Usually in the air When we are weak or cold And infection was caught cold. What is a viral infection that causes respiratory diseases.
As the virus, which is the smallest creatures, please contact the cough, sneeze snot, often in the air, when we are weak or cold air. And the infection is a cold. The flu is a virus causing respiratory diseases.