Someone coughs on you (or near you ... possibly in time)
You touch the virus, then you wipe your eyes (most commonly)
The virus gets under your skin, gets into a cell of your body, and reproduces.
The flu virus causes epidemics because so many people are infected at one time.
Infected solders
Infected solders
Avian Flu is caused by the virus like Flu virus in man. This virus has evolved with birds.
The virus that caused a widespread pandemic in 1918 was the Spanish flu, not 1913. The Spanish flu was a strain of the H1N1 influenza virus and it infected one-third of the world's population, resulting in millions of deaths worldwide.
No, there is no connection between the two infections. TB is caused by a bacterium called mycobacteria. The flu is caused by an influenza virus. Flu starts in healthy people when infected with the virus as well as those with underlying medical conditions, or other infections. People with bacterial infections and underlying medical conditions are at higher risk for catching viral infections like the flu, but that is not typically how the flu is started.
The flu virus can be contracted primarily through respiratory droplets when an infected person coughs, sneezes, or talks. It can also spread by touching surfaces contaminated with the virus and then touching the face, particularly the mouth, nose, or eyes. Close contact with infected individuals increases the likelihood of transmission. Additionally, being in crowded places during flu season heightens the risk of catching the virus.
It depends on the virus. It can immediately cause a disease (cold virus) or it can remain quiet for a long time before coming active (Epstein-Barr).
"Swine flu" is a viral infection of swine (pigs). There is evidence that this virus is the same that infected humans in the 1918 pandemic. It has been labeled the N1H1. There has been controversy that the flu now is a variant of this 1918 flu. We are not sure where it started: pigs or humans? "Swine flu" H1N1 virus produces similar influenza-like illnesses. Symptoms include fever, cough, sore throat, body aches, headache, chills and fatigue and some diarrhea and vomiting. The present H1N1 virus is not zoonotic swine flu, as it is not transmitted from pigs to humans, but from person to person.
Yes flu is a virus
Yes. The virus that causes the flu is very sneaky and you can be infected and pass the virus to others even before you know you are sick. The best defense is to avoid others who are sick and to wash your hands frequently.
It is theoretically possible, however we tend to only be infected by one virus at a time.