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Influenza (Flu)

Influenza flu virus

The flu is a respiratory illness caused by either influenza A or influenza B viruses. Flu can cause mild to severe illness and can be fatal.  The flu is usually a seasonal illness that is most commonly seen in the fall and winter months in Wisconsin.

MHD Flu Vaccine Clinics

Flu vaccines available for anyone 6 months of age and older. Individuals can safely receive flu vaccine at the same time as their COVID-19 vaccine

Southside Health Center (1639 S. 23rd St.)

  • Monday, 3 – 6 p.m.
  • Tuesday, 1 – 4 p.m.

Northwest Health Center (7630 W. Mill Rd.)

  • Wednesday, 3 – 6 p.m.
  • Friday 10 a.m. – 1 p.m.

Keenan Sexual Health Clinic (3200 N. 36th St.)
Due to building maintenance, clinic will be temporarily held at Northwest Health Center


  • Note: The last patient registration will be accepted 15 minues before the clinic closes.


For information about COVID-19 vaccine, please visit milwaukee.gov/CovidVax

For questions, please call (414) 286-8034

 Flu kids

Protect Your Crew From the Flu

Even healthy kids can get the flu and it can be serious. Protect your crew by getting a routine flu shot this year and every year.

Download and share flyers, info sheets and social media ads

VaccineFinder: Find Vaccines Near You


Protect Your Health This Season

Getting a flu vaccine is more important than ever during 2021-2022 flu season to protect yourself, your family and your community from flu. Prevent flu this season by rolling up your sleeve for your annual flu vaccine. This fall and winter it is important for everyone to do their part to prevent respiratory illnesses, like flu. 

Other Types of Flu

Pandemic Flu

Pandemic Influenza is a worldwide outbreak of a new type of flu. This flu virus would be different than the normal, seasonal flu virus that affects people every year. Because the virus is new, it is expected that many people will become sick and that the virus will be easily passed from person-to-person. Pandemic flu may cause serious illness and affect many parts of the world in a short amount of time.

  • The H1N1 ("Swine") Flu of 2009 caused widespread illness in the U.S. during the Spring and Fall of 2009.  

  • The Hong Kong Flu of 1968 was the mildest of the pandemics and made it to the U.S. by September of 1968, with widespread illness taking place around December. The highest number of deaths occurred between December of 1968 and January of 1969, estimated to be at 33,800 in the U.S. But the virus returned again in 1970 and 1972.

  • The Asian Flu of 1957 was much less deadly than the Spanish Flu some 40 years before. Due to advances in science and technology the virus strain was quickly identified. In the U.S., approximately 69,800 people died from the Asian Flu

  • The Spanish Flu of 1918 is widely considered to be the most severe pandemic of the 20th century. Some reports suggest that as much as 20-40% of people in the world became sick and that 50 million died, globally. During the Spanish Flu, adults between 20-50 years old were the most vulnerable to the disease.

 For more information about pandemic flu click here.

What is Avian (bird) Flu?

Avian influenza viruses are caused by influenza A viruses and occur naturally among birds. There are different subtypes of influenza A viruses. All known subtypes can be found in birds. The current influenza A subtype that has caused worldwide concern is the H5N1 subtype. Wild birds carry avian influenza viruses in their bodies, but do not get sick from them. However, avian influenza viruses can be passed very easily from bird to bird and can make domesticated birds, such as chickens, turkeys, and ducks very sick and kill them.

City of Milwaukee Health Department



 Zeidler Municipal Building, 841 N. Broadway, 3rd Floor, Milwaukee, WI 53202



Routine Vaccinations

View our walk-in Immunization Clinic hours for routine childhood/adolescent vaccinations provided though the City of Milwaukee Health Department. 

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