The Influenza virus is causing a respiratory illness called flu. The virus infects the nose, throat and lung part of the body. Although, the illness caused by the virus usually considered as low to moderate, it could also lead to extreme conditions and even death. The best and most effective way to protect bodies against the virus in though the vaccination.
The symptoms of flu could include fever, sore throat, runny nose, and headache. Depends on the severity of the disease, it could also cause vomiting and diarrhea. The virus can spreads directly by droplets from infected people to persons nearby. It also it will be transmitted with touching objects where there are flu virus and then touching mouth and eyes with unwashed hand.
The infection is depending on the person immune system. “Some people, especially young children and people with weakened immune systems, might be able to infect others for an even longer time.” (https://www.cdc.gov/flu/keyfacts.htm)
To prevent flu, the first step is to get a flu shot every year. But, regular prevention methods such as washing hands, and staying away from sick people are also very effective. The flu is also a seasonal disease and circulates in very large areas and effect large group of people. The seasonal epidemic largely happens in cold seasons.
According to the World Health Organization, there are 3 types of seasonal flue virus types A, B, and C. The flu antiviral drugs may reduce severe complications and deaths. These medicines include inhibitors of the influenza neuraminidase protein and M2 proton channel blockers adamantanes.