Breaking down the four types of flu viruses and what you can do to stay healthy

Key takeaways:

1. The flu spreads easily and can affect people differently.
   Influenza spreads through respiratory droplets and contaminated surfaces, and symptoms can range from mild to severe depending on the strain and the person’s overall health.

2. Flu vaccines are one of the best ways to prevent illness.
   Annual vaccination helps protect against Influenza A and B, lowers the risk of getting sick, and can reduce the severity of illness even when the vaccine is not a perfect match.

3. Everyday habits also help stop the spread.
   Handwashing, covering coughs and sneezes, disinfecting surfaces, staying home when sick and maintaining a healthy lifestyle can all help protect you and those around you. And remember, getting your flu shot is your best defense.

Influenza, or the flu, is a contagious virus that affects your breathing and attacks your immune system. The flu mainly spreads when an infected person coughs, sneezes or talks, releasing tiny droplets. You can also get sick by touching things that have the virus and then touching your face. 

Flu symptoms can change, but they usually include fever, feeling tired, a scratchy throat and body aches that make it tough to keep up with your usual routine. Every year, flu cases can be mild or more severe, depending on the type of virus and how healthy you are.

By learning about the types of influenza, how they spread and how to prevent infection, we can work on lessening its effect on ourselves and those around us.

Influenza A

Influenza A is the most common variant of the virus. It affects humans and many animals such as birds and pigs. Its ability to mutate quickly into new strains is what prevents our immune systems from recognizing and combating the virus. 

Influenza A is associated with significant outbreaks and, at times, worldwide health concerns. Due to its potential to spread across different species, health authorities closely monitor it to detect any developments that could increase its danger.

Some quick facts about Influenza A include:

• Prevalence: Influenza A is responsible for about 75% of flu cases across the globe.
• Transmission: It can spread through droplets from coughs and sneezes.
• Symptoms: Fever, cough, sore throat and fatigue are common signs.
• Vaccination: Annual vaccines are formulated to protect against prevalent strains.
• Impact: In vulnerable groups — like children, those over age 65 and pregnant women — it can lead to hospitalization or complications like pneumonia or bronchitis.

Influenza B

Influenza B is a variant that only circulates among humans, distinguishing it from Influenza A, which can move between different species. Although it usually results in smaller outbreaks, it still leads to seasonal flu occurrences affecting various communities. 

This strain of flu is notably prevalent during cooler periods when individuals tend to remain indoors, which makes it easier for the virus to spread. Environments like schools and workplaces are common areas where Influenza B rapidly circulates. 

Key aspects of Influenza B include:

• Prevalence: Though less common than Influenza A, it is more frequent during winter months.
• Transmission: It is spread primarily through respiratory droplets.
• Symptoms: Fever, cough, fatigue and body aches are common.
• Vaccination: Annual flu shots are recommended for prevention.
• Impact: Although less severe than Influenza A, this flu can negatively affect daily life and activity. It can still cause pneumonia or severe dehydration in vulnerable groups.

Influenza C

Influenza C is a less-common strain that generally leads to very mild illness. It mainly affects children and young adults, but those who catch this type might not even recognize they’ve had the flu.

Although it’s rare, being aware of all flu types can assist people and families in understanding how these viruses function. Here are some characteristics of Influenza C:

• Prevalence: Influenza C is uncommon and rarely leads to widespread outbreaks.
• Transmission: It is spread mainly through respiratory droplets when someone infected coughs or sneezes.
• Symptoms: Symptoms are often mild, including slight fever, cough, runny nose and fatigue, which may not be easily recognized.
• Vaccination: There is currently no specific vaccine designed to protect against Influenza C strains.
• Effect: This flu type is unlikely to cause hospitalization or severe complications, making it a lesser concern compared to other flu types.

How can I prevent getting the flu?

Taking steps to avoid the flu can help protect not only yourself but also those around you, especially individuals who may be at higher risk of complications. One of the most effective ways to lower your chances of getting Influenza A or B is by getting vaccinated.

What is a flu vaccine?

Most flu vaccines are given as shots, but there is also a nasal spray version. The vaccine stimulates your immune system to produce antibodies, which protect against the viruses that cause Influenza A and B. 

It takes about two weeks after vaccination for the antibodies to develop, which is why we recommend getting vaccinated early in the fall. Rest assured, you will not get the flu from receiving the vaccine.

The effectiveness of the flu shot varies from year to year. However, even when it isn’t a perfect match, vaccination can still reduce the severity of illness and the number of flu-related doctor’s visits each year.

When and where to get your flu shot

Getting a flu shot is simple and quick. You can reach out to your Mount Nittany Health Primary Care provider.

Other preventative measures

In addition to getting a flu shot, you can slow the spread of the flu by practicing everyday healthy habits, such as:

• Washing your hands with soap and water or using hand sanitizer frequently to remove germs 
• Covering your mouth and nose when coughing or sneezing to prevent spreading droplets that may carry the virus
• Cleaning and disinfecting commonly touched surfaces, such as doorknobs, light switches and cell phones
• Staying home if you’re feeling sick 
• Maintaining a healthy lifestyle, such as eating balanced meals, staying active and getting enough sleep

By getting a flu vaccine and integrating these habits into your routine, you can play an active role in keeping your community healthier!