Flu is a contagious respiratory illness caused by influenza viruses that infect the nose throat and sometimes the lungs. Major epidemics are caused by A and B and it is usually these two varieties that cause the flu.
Influenza can cause mild to severe illness and it may predispose to exacerbations of underlying disease or development of secondary bacterial infections.
Influenza is caused by. Human influenza A and B viruses cause seasonal epidemics almost each winter within the United States. Some subtypes of Influenza A commonly called Swine flu H1N1 virus and Bird flu. A B and C.
They have two kinds of spiky structures on their surface. The flu is caused by influenza viruses that infect the nose throat and lungs and it is spread when people with the flu cough sneeze or talk. Influenza is caused by an RNA virus from the Orthomyxoviridae family that consists of the genera influenza A B and C.
Influenza is a contagious acute respiratory illness caused by influenza viruses usually influenza A or B subtypes. Influenza viruses are categorized as types A B C and D. Influenza type B infects humans only therefore it is unable of undergoing a mutation.
The flu or influenza is a contagious respiratory illness caused by viruses that infect the nose throat and sometimes the lungs. Influenza the flu and COVID-19 the illness caused by the pandemic coronavirus are both contagious respiratory illnesses meaning they affect your lungs and breathing and can be spread to othersAlthough the symptoms of COVID-19 and the flu can look similar the two illnesses are caused. There are three types of influenza viruses.
What is Influenza Flu. This illness is different from a cold. Influenza is an acute respiratory illness caused by influenza A B and C viruses that occurs in local outbreaks or seasonal epidemics.
While more than 100 different viruses can cause a cold only influenza virus types A B and C cause the flu. They have a diameter of about 100 nanometers making them a medium sized virus. Clinical illness follows a short incubation period and presentation ranges from asymptomatic to fulminant depending on the characteristics of.
Influenza or flu is a contagious respiratory illness that is caused by the influenza virus. A good start is to know what causes it. The flu spreads READ MORE.
It can cause mild to severe illness and at times can lead to death. These major types generally produce similar symptoms but are completely unrelated antigenically so that infection with one type confers no immunity against the others. Get information videos and facts about influenza on Health-Wiki Practo.
Influenza is caused by any of several closely related viruses in the family Orthomyxoviridae a group of RNA viruses. The best way to prevent flu is by getting a flu vaccine each year. Flu symptoms often appear suddenly and can include high fever headache cough chills and more.