Vaccine Information for the Public

NOTE: Changes to this page will occur as additional information about the COVID-19 vaccine becomes available. Please check back for updated information.

COVID-19 Vaccine: What do you need to know?

COVID-19 vaccinations can help protect you from getting COVID-19. The vaccines help by making your body create an immune response without having to experience sickness and without being contagious to others. If the vaccine you get has two doses, it is very important to return for your second dose to get the best protection.

COVID-19 Vaccine Safety

  • Before any vaccine can be authorized or approved for use, clinical trials of COVID-19 vaccines must first show that they are safe and effective. In order for the FDA to issue an Emergency Use Authorization (EUA), benefits of the COVID-19 vaccine must outweigh the risks.
  • The U.S. vaccine safety system makes sure that all vaccines are as safe as possible. Learn how federal partners are working together to ensure the safety of COVID-19 vaccines.
  • Common side effects of the vaccine include injection site pain, headache, and tiredness. View a full list of side effects:

Benefits of Getting a COVID-19 Vaccine

COVID-19 Vaccination will:

  • Help prevent you from getting COVID-19
  • Provide a safer way to build protection
  • Be an important tool to help stop the pandemic

Getting COVID-19 may offer some natural immunity for a limited amount of time. however, experts don’t know how long this protection lasts. The risk of severe illness and death from COVID-19 is greater than any benefits of natural immunity.

Visit the Centers for Disease Control and Prevention for additional information about the benefits of getting a COVID-19 Vaccine.

Frequently Asked Questions

(English|Spanish) [pdf]


We currently offer 3 vaccines:

  • Pfizer-BioNTech COVID-19 vaccine
  • Moderna COVID-19 vaccine
  • Johnson & Johnson (Janssen) COVID-19 vaccine

  • Two doses for the Pfizer-BioNTech vaccine, 21 days (3 weeks) apart
  • Two doses for the Moderna vaccine, 28 days (4 weeks) apart
  • One dose for the Johnson & Johnson (Janssen) vaccine

Yes, you can get vaccinated after recovering from COVID19. At this time, it is not known how long someone is protected from getting sick again after recovering from COVID-19. According to the CDC, if you were treated for COVID-19 symptoms with monoclonal antibodies or convalescent plasma, you should wait 90 days before getting a COVID-19 vaccine.

Employers may require employees to be vaccinated. Please check with your employer’s Human Resources Department for more specific information.

  • Getting the vaccine will NOT affect your immigration status
  • U.S. Citizen and Immigration Services will not consider testing, treatment, or preventative care, including vaccines, related to COVID-19 as a part of public charge.

Wait times at vaccine clinics may differ depending on appointments and demand. Appointments are also available for your convenience. Getting vaccinated only takes a few minutes. However, individuals must remain on site after getting vaccinated for 15 minutes observation to ensure a severe allergic reaction is not experienced.

Please refer to your COVID-19 Vaccination Card for the date of your second dose. If you miss that date, visit any vaccine provider to get your second dose as soon as possible.

You should still get your second dose, even if it is late. Visit any vaccine provider to get your second dose as soon as possible.

You can now walk-in or make an appointment to get your second dose at most vaccine providers. You no longer need to return to the same location where you got your first dose. For a list of additional local providers, visit


Side effects are common after getting a vaccine. It means your body is building an immune response.
Common side effects are:

  • Pain and swelling on the arm where you received the shot
  • Fever
  • Chills
  • Feeling tired
  • Headache
  • Body Aches
  • The side effects should go away within a few days.

A Severe Allergic Reaction (Anaphylaxis) can happen with any vaccine. Severe Allergic Reactions to the COVID-19 vaccines usually happen within the first 30 minutes after vaccination and are very rare, only happening in 2-5 people per million vaccinated. After getting your vaccine, you will be asked to remain at the vaccination site for a 15-minute observation to make sure you do not have a Severe Allergic Reaction.

    Tell your vaccine provider about all your medical conditions, including if you:

    • have any allergies
    • have any history of allergies.
If you have a history of severe allergic reaction, you will be asked to stay at the vaccination site for 30 minutes after getting vaccinated

Blood Clots that happen at the same time as low blood platelet counts (Thrombosis w/ Thrombocytopenia Syndrome, or TTS) have been seen in some people who got the Johnson & Johnson vaccine. TTS is very rare, only happening in about 1.9 per million vaccinated. Symptoms usually began 1-2 weeks after being vaccinated. Seek medical attention if you notice any of the following symptoms several days after being vaccinated:

  • Shortness of Breath
  • Chest Pain
  • Leg Swelling
  • Persistent Abdominal Pain
  • Severe Headaches or Blurred Vision
  • Easy Bruising
  • Tiny blood spots under the skin beyond the injection site.

Inflammation of the heart (Myocarditis) and Inflammation of the tissue surrounding the heart (Pericarditis) has been seen is some people who got the Pfizer or Moderna Vaccines. This is very rare. Out of 177 Million people who have received at least one dose of the COVID-19 vaccine, only 518 cases of heart inflammation have been confirmed; a rate of 2.9 people per million vaccinated. Symptoms usually begin within a few days of getting vaccinated. Seek medical attention if you notice any of these symptoms several days after being vaccinated:

  • Chest Pain
  • Shortness of Breath
  • Feelings of a fast heartbeat or a fluttering/pounding heart

  • Chest Pain• Please delay getting your vaccine if you have a fever or are currently experiencing any symptoms of COVID-19. If you have symptoms, you should get tested.
  • Please delay getting your vaccine if you have recently recovered from COVID-19 and were treated with monoclonal antibodies or convalescent plasma.
  • Please contact your healthcare provider to discuss your options if you:
    1. Have a bleeding disorder or are on a blood thinner
    2. Are immunocompromised or are on a medicine that affects your immune system
    3. Have received another COVID-19 vaccine

No. You cannot get COVID-19 from the COVID-19 vaccine. The vaccine does not contain any COVID-19 virus material, live virus, or an inactivated COVID-19 virus.

No. Getting the COVID-19 vaccine will not cause you to test positive on a Viral COVID-19 Test that detects current infection, such as the nasal swab tests.

There is no evidence that getting the COVID-19 vaccine will make it difficult for you to have children. Vaccines are safe for people who are trying to become pregnant.

Yes, vaccines are safe for people who are currently pregnant. There is no evidence that receiving a COVID-19 vaccine has any negative effect on pregnancy. Increasing evidence shows that antibodies from vaccination may be able to cross the placenta into your baby, protecting them as soon as they are born.

Yes. Children aged 12 and older can receive the Pfizer-BioNTech vaccine.


All three vaccines are extremely effective at preventing severe illness and death from COVID-19. All three vaccines are also effective against variants.

If you lose your vaccination card or need a replacement, please contact the vaccine provider. If your vaccine provider was Stanislaus County Public Health, please call the general COVID-19 information line (209) 558-7535.
You may also get a digital copy of your COVID-19 vaccination card at


If you got the Pfizer or Moderna vaccine, you are fully vaccinated 2 weeks after your 2nd dose.

If you got the Johnson & Johnson (Janssen) vaccine, you are fully vaccinated 2 weeks after your single dose.

Fully vaccinated people can resume doing most activities without wearing a mask or social distancing. Visit for more information.

If you’ve been exposed to COVID-19 and you are not experiencing symptoms, you do not need to quarantine or get tested. You should still monitor yourself for symptoms and get tested if they develop.

If you live in a congregate setting, live in close contact with someone who has COVID-19, or start having symptoms, you should still stay home and get tested.

Sometimes. You should follow any state and local laws, and respect the policies of businesses and workplaces you visit. For example, if a store you visit requires its customers to wear masks while shopping, you should do so.

Certain precautions such as covering your coughs and washing your hands are generally healthy behaviors that should be continued.

Masks are still required on all forms of public transportation including planes, trains, and busses. Masks are also still required in transportation hubs such as airports and train stations.

You should follow all the guidelines set by your destination.

Generally, if you’re traveling within the United States, you do not need to get tested before or after travelling and you do not need to quarantine once you arrive. Individual states, counties, or cities may have stricter requirements.

If you are travelling internationally, follow all the guidelines set by your destination country. When you return to the US, you must show a negative test result before boarding a return flight and you should get tested after you arrive, but you do not have to quarantine. Individual states, counties, or cities may have stricter requirements.

Helpful Links

Additional Coronavirus Information

Contact Us:
For Public Information: (209) 558-7535
For Hospital & Provider Information: (209) 558-5678

California Department of Public Health
US Centers for Disease Control and Prevention

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Vaccine Clinic Request Form

Are you interested in hosting a Vaccine clinic at your business or community site? Do you know somewhere in your neighborhood that would make for a great vaccination clinic?

Let us know!