Respiratory Viruses

Respiratory viruses can cause the common cold and influenza-like illness.

While you may be familiar with these illnesses – and have likely had them before – you may not be as familiar with all the different viruses that cause them.

For weekly surveillance updates for all respiratory viruses in Wisconsin, see the Weekly Respiratory Surveillance Report, P-02346. For interactive respiratory illness data, see the Respiratory Illness Data Snapshot.

COVID-19

Illustration of Coronavirus-2019 ncov flu

Learn the best ways to prevent and treat COVID-19 and what to do if you test positive.

Influenza (Flu)

Illustration of the influenza virus

Find information about flu prevention, when to seek medical advice, and data.

RSV

Illustration of the RSV virus

Read about the signs and symptoms of RSV. Learn who is most likely to get serious complications if they get sick with RSV.

Adenovirus

Illustration of Adenovirus Type 5

Adenoviruses are a group of viruses that cause a range of illnesses, including common cold, fever, bronchitis, sore throat, and pink eye.

Seasonal Coronaviruses

Coronavirus under a microscope

Coronaviruses are a large family of viruses that can cause mild to moderate illness.

HMPV

Illustration of influenza virus cells

HMPV illnesses are mostly diagnosed in young children, older adults, and people with weakened immune systems.

Outbreaks in Long-Term Care Facilities

Gloves, mask and goggles

Find guidance for preventing and controlling acute respiratory illness outbreaks in Wisconsin long-term care facilities.

Parainfluenza

Illustration of the parainfluenza virus

Parainfluenza viruses cause respiratory illnesses that are most common in infants and young children, though anyone can be infected.

Rhinovirus/Enterovirus

Illustration of the enteroviruses

About 50% of common colds are caused by some kind of rhinovirus. Most infected people have no symptoms or only mild symptoms, but some infections can be serious.

People at higher risk

Though most people will only experience mild to moderate symptoms from a respiratory virus, some people may get seriously ill or even die. Those with weakened immune systems, infants, older adults, and those with existing lung or heart conditions are at a higher risk of developing severe illness. See our People at Higher Risk webpage for more information on what it means to be part of these groups.


Resources

Resources can be ordered for free. Here's how:


Questions about respiratory viruses? Contact us!

Phone: 608-267-9003 | Fax: 608-261-4976

Glossary

 
Last revised December 17, 2024