A. You can't get exactly the same one, as your body will have developed antibodies to it. But “cold and flu viruses mutate, so there are subtly different forms of the virus,” says Caroline Rudnick, an assistant professor of community and family medicine at St. Louis University.
Unfortunately, no. Experts say it is possible to catch the flu twice in one season. The CDC recommends the flu vaccine for everyone ages 6 months and older. This flu season is turning out to be one of the worse since the 2009 "swine flu" epidemic, CDC officials said last week.
While the symptoms of influenza B mirrors those of A, the main difference between the two strains is who it can affect. This allows strains of A to be spread more rapidly than B, while also meaning strains of B cannot cause pandemics with symptoms likely less severe. Flu shots protect against both strains of influenza.
Take Tamiflu within 48 hours of flu symptom onset. You have a choice of capsules or liquid. It's best to take Tamiflu with food—there is less chance of stomach upset if you take it with a light snack or a meal.
There is still a possibility you could get the flu even if you got vaccinated. If they are not closely matched, vaccine effectiveness can be reduced. However, it's important to remember that even when the viruses are not closely matched, the vaccine can still protect many people and prevent flu-related complications.
This is actually pretty common. The rapid flu tests that most health care providers use are a great tool, but they can be wrong. Accuracy can range anywhere from 50 - 90%, depending on the test and prevalence of the flu in the community. False negatives are more likely when flu activity is high, but can occur any time.
Yes, You Can Have Two Colds at the Same Time. It's cold and flu season. Here's a rundown on cold viruses, how you can have two at once, and what you can do to cut down your risk of catching one. While there are more than 200 virus strains that can contribute to the common cold, the most common are rhinoviruses.
Tamiflu is used to treat people 2 weeks of age and older who have the flu (influenza A and B viruses). Tamiflu is also sometimes used for prevention (prophylaxis) of the flu in people 1 year of age and older, but it is not a substitute for getting the flu vaccine.
Flu season typically runs from November through March, although you can get it in October or as late as May. You can catch the flu at other times of the year. But symptoms outside of flu season are more likely to be from a cold or an allergy. Flu tends to be much worse than a cold.
"It's a myth that you can get flu from the flu vaccine," Schaffner said. The viruses in the flu shot are killed, so people cannot get the flu from a flu vaccine. However, because temperatures in the nose are colder, the virus causes a small infection in the nose.
After you're infected with a cold virus, you usually become immune to it, so it's unlikely it will reinfect you. Unfortunately, you're still vulnerable to the 200-plus other viruses floating around during any given year, Collins says, and they can combine to create more than 1,500 different variations of colds.
If you're sick with a cold or other mild illness (respiratory or otherwise) and you don't have a fever, you can absolutely get your flu vaccine. If you have a fever (temp over 99.5ish), the general consensus has always been that you should hold off on getting the flu vaccine until it breaks.
Flu season runs from October to May, with most cases happening from late December to early March. But the flu vaccine is usually offered from September until mid-November. Even as late as January, there are still a few months left in the flu season, so it's still a good idea to get protected.
Getting a flu shot does not weaken your immune system and make you more likely to get the flu. Getting a flu vaccine prepares your immune system for the flu. A flu vaccine teaches your immune system to recognize that virus as a threat.
The U.S. Centers for Disease Control and Prevention, which conducts studies annually to gauge the vaccine's protective ability, has found immunization reduces the risk of flu illness by 40 percent to 60 percent during seasons when most circulating flu viruses are well-matched to the flu vaccine.
Other reactions following the flu shot are usually mild and can include a low grade fever and aches. If these reactions occur, they usually begin soon after the shot and last 1-2 days. The most common reactions people have to flu vaccine are considerably less severe than the symptoms caused by actual flu illness.
The flu vaccine can't give you the flu. But you might develop flu-like symptoms — despite getting a flu shot — for a variety of reasons, including: Reaction to the vaccine. Some people experience muscle aches and a fever for a day or two after receiving a flu shot.
How long does it take to develop symptoms of influenza after being exposed? The incubation period of influenza is usually two days but can range from one to four days. Typical influenza disease is characterized by abrupt onset of fever, aching muscles, sore throat, and non- productive cough.
In general, people who have the flu often feel some or all of these symptoms, according to the CDC:
- Fever or feeling feverish/chills (not everyone with flu will have fever)
- Sore throat.
- Runny or stuffy nose.
- Muscle or body aches.
- Fatigue (tiredness)
About a week. You're contagious from 1 day before you have any symptoms. You stay that way for 5 to 7 days after you start feeling sick. Kids may be able to spread the virus for even longer, until all of their symptoms fade.
CDC recommends that you stay home for at least 24 hours after your fever is gone except to get medical care or other necessities. Your fever should be gone without the need to use a fever-reducing medicine, such as Tylenol®.