how many types of flu are there?
154238
There are four types of influenza viruses: A, B, C and D. Human influenza A and B viruses cause seasonal epidemics of disease (known as the flu season) almost every winter in the United States.
16002
Strains of influenza B are exclusively contracted by humans, while influenza A can be carried (and spread) by animals, however, both strains are transmitted mainly by respiratory droplets from coughing and contact with an infected person.
1093739
The epidemiology of RSV is complex and dynamic. There are two subgroups of RSV, A and B, and several strains of both subgroups circulate during each seasonal epidemic. Unlike influenza in which three (or more) strains circulate worldwide, RSV strains differ from location to location.
1298511
There are eight different types of OI. Each type has different signs and symptoms. There are four main types and four lesser-known types. Only the four main types will be discussed.
1389482
Influenza (flu). Caused by the influenza virus, the flu is more serious than the common cold and infects the lungs, throat and nose. Symptoms include sudden fever or feeling feverish, chills, cough, sore throat, loss of appetite, muscle aches, fatigue, runny nose, sneezing and watery eyes.
1141713
The symptoms of flu can include fever or feeling feverish/chills, cough, sore throat, runny or stuffy nose, muscle or body aches, headaches and fatigue (tiredness).
178841
Type A influenza can be dangerous and is known to cause outbreaks and increase your risk of disease. Unlike a type B infection, type A viruses are categorized by subtypes and strains. Influenza A mutates faster than influenza B, but both viruses are always changing, creating new strains from one flu season to the next.
160898
There are several different types of influenza virus: A, B, C, and D. Influenza types A, B, and C can cause illness in humans. But types A and B cause seasonal epidemics of respiratory illness nearly every year. Influenza A typically causes the majority of illnesses during flu season.
527815
Influenza is a viral infection that attacks your respiratory system — your nose, throat and lungs. Influenza is commonly called the flu, but it's not the same as stomach "flu" viruses that cause diarrhea and vomiting.
806137
One of the most distinct symptoms of the flu (influenza) is painful body aches. 1﻿ For most people, their muscles feel so sore and achy it hurts to move. Additionally, body aches can leave you feeling weak, fatigued, and extremely exhausted.
635994
H1N1 flu is a subtype of influenza A. Subtypes of influenza A are categorized based on two proteins on the surface of the virus, hemagglutinin (H) and neuraminidase (N). There are many H and N subtypes, and each one is numbered. All H and N flu subtypes are influenza A viruses.
353836
“You Can't Get the Flu More Than Once During Flu Season” It is possible that you could get infected with one strain and then another during a given season, especially if you haven't been vaccinated and/or have a compromised immune system.
1006677
There are also some flu vaccines that protect against three different flu viruses (“trivalent”); an influenza A (H1N1) virus, an influenza A (H3N2) virus, and one influenza B virus. Two of the trivalent vaccines are designed specifically for people 65 and older to create a stronger immune response.
133741
Unfortunately, no. Experts say it is possible to catch the flu twice in one season. That's because there are multiple strains of flu viruses circulating at any one time, said Dr. William Schaffner, an infectious-disease specialist at Vanderbilt University Medical Center in Nashville.
256135
Type B flu may cause a less severe reaction than type A flu virus, but occasionally, type B flu can still be extremely harmful. Influenza type B viruses are not classified by subtype and do not cause pandemics.
1093640
Flu and Adults with Chronic Health Conditions. Influenza (flu) is a contagious and potentially deadly virus that can result in serious complications for individuals living with chronic health conditions such as heart disease, lung disease, and diabetes, even when chronic conditions are well-controlled.
989694
Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. It can cause mild to severe illness, and at times can lead to death. The best way to prevent flu is by getting a flu vaccine each year.