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Shasta County's Response to Local Emergencies

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Vaccine Frequently Asked Questions

We know you have many questions about the vaccines and how they affect you and your loved ones. Below is a collection of common questions. We'll continue to add to the list as we receive questions from the community. Submit your questions to

Do you have unanswered questions?

Call 211 for frequently asked questions about coronavirus, or email

When and where can I get vaccinated?

Everyone age 16 and older can get vaccine in Shasta County now. People age 16 or 17 can only receive Pfizer vaccine at this time. Schedule an appointment on MyTurn or look through the mass vaccination clinics and vaccine locations listings on the 'Vaccinations' page of

You can get the second dose of the Pfizer vaccine after 21 days and the second dose of Moderna after 28 days. However, second doses may be administered up to 6 weeks (42 days) after the first dose. Second-dose mass vaccination clinics and vaccine locations are listed on this page.  

We have a mobile vaccination team that is reaching out to people who cannot leave their homes. If someone meets this criteria, they can send an email to and we can direct it to the appropriate person.   

The County has a mobile vaccination team and several community providers are also using mobile clinics to vaccinate hard-to-reach populations, including the unsheltered, homeless, medically fragile and those who can't leave their homes.


As a health department, it is our goal to ensure everyone in the county is safe and healthy. The care and safety of the public is always our top priority. As with any vaccine, Shasta County will not distribute a COVID-19 vaccine unless the U.S. Food and Drug Administration (FDA) has determined it is safe and effective. The FDA oversees and regulates vaccine quality, safety and effectiveness. The FDA is committed to expediting the development of COVID-19 vaccines, but not at the expense of sound science and decision making. It will not jeopardize the public's trust in the science-based, independent review of any vaccine.

After the FDA determines a COVID-19 vaccine is safe, the Advisory Committee of Immunization Practices (ACIP) reviews the clinical trial data and provides advice and guidance to the Centers for Disease Control.

In addition to federal review, California has formed a panel of public health and immunization experts—the Scientific Safety Review Workgroup—to further review the efficacy and safety data of COVID-19 vaccines approved by the FDA. 

National vaccine safety monitoring systems watch for rare side effects (called adverse events) that may not have been seen in clinical trials. If the symptoms are true safety concerns, the guidelines for the vaccine will be changed. This monitoring ensures that the vaccine’s benefits continue to outweigh the risks. 

Visit the CDC for more information on the Safety of COVID-19 Vaccines and to report unusual side effects following any vaccination (see links under "Existing Safety Monitoring Systems").  

Below are some of the benefits of getting a COVID-19 vaccination.

  1. Prevent serious illness: A COVID-19 vaccine helps keep you from getting seriously ill even if you do get COVID-19. It also protects people around you, particularly people at increased risk for severe illness from COVID-19.
  2. Help stop the pandemic: Scientists estimate that to control COVID-19, about 7 or 8 of every 10 people will need to be vaccinated to control the virus. Given that the U.S. population is more than 330 million people, this means that almost 250 million will need to receive the vaccination to reach this goal.
  3. Build protection safely: The risk of severe illness and death from COVID-19 far outweighs any benefits of natural immunity. COVID-19 can have serious, life-threatening complications, and there is no ways to know how COVID-19 will affect you. The vaccination will help protect you by creating an antibody response without having to experience sickness.

You might have fatigue, headache, body aches, soreness at the site of injection and even some fever. These are normal immune responses to vaccines and are your body’s natural response in building immunity. The second dose might have stronger side effects than the first.

You can register with V-Safe , a smartphone based tool that uses texts and web surveys to provide personalized health check-ins after receiving a COVID-19 vaccination. Read the V-Safe flyer  for more information.

California’s Scientific Safety Review Workgroup also conducts reviews to ensure the safety and efficacy of any vaccine approved by the FDA.

After a vaccine is authorized or approved for use, many vaccine safety monitoring systems watch for adverse events (possible side effects). This continued monitoring can pick up on adverse events that may not have been seen in clinical trials.

The Vaccine Adverse Event Reporting System (VAERS), a national vaccine safety surveillance program, collects and analyzes adverse events associated with U.S. licensed vaccines. Anyone can submit a report to VAERS, including providers, patients and parents.

Providers: Under the Emergency Use Authorization, providers are required to report serious negative side effects to VAERS or to the vaccine’s manufacturer per its Fact Sheet.

Public: The public should report unusual side effects to one of the nation's safety monitoring systems for the general public, military members, veterans and tribal nations. Or, call VAERS toll-free number at 1-800-822-7967.

For an additional layer of safety monitoring, the CDC has introduced the V-safe app. It is a smartphone-based health checker for people who receive COVID-19 vaccines. V-safe uses text messaging and web surveys to:

The app allows the CDC and FDA to evaluate COVID-19 vaccine safety in real time and make sure vaccines are as safe as possible.

Public Health has worked with long-term care facilities since long before this pandemic began, to help them create and implement the processes and protocols necessary to prevent a communicable disease outbreak, and to respond quickly if one does happen. Most long-term care facilities have quickly and effectively isolated COVID-19 positive staff and residents to ensure that any spread is either non-existent or minimal. 


Moderna and Pfizer are two-dose vaccines, and Johnson & Johnson is one dose. 

Immunity begins about 2 weeks after the first dose, but maximum immunity may not be achieved for 2 to 4 weeks after the second dose. It may take 6 to 8 weeks to get the full benefits of the vaccine. Therefore, it is possible that a person could be infected by COVID-19 just before or just after vaccination and then get sick because the vaccine did not have enough time to provide full protection.

According to the CDC, people should be vaccinated even if they had COVID-19, but they should wait until they have recovered from illness (if they had symptoms) and they have met criteria to discontinue isolation. This also applies to people who became infected after their first dose, but before their second.

While there is no recommended minimum interval between infection and vaccination, current evidence suggests that the risk of SARS-CoV-2 reinfection is low in the months after initial infection.

Not yet. There is not enough information currently available to say when the CDC will stop recommending that people wear masks and avoid close contact with others to prevent the spread COVID-19 to those without the vaccine. Experts need to understand more about the protection that COVID-19 vaccines provide before making that decision. Other factors, including how many people get vaccinated and how the virus is spreading in communities, will also affect this decision.

We do not yet have this data broken down by race. While not complete or accurate, the state website does have data broken down by race. We have a community engagement team that is working to ensure that people from diverse populations are aware of the vaccine options.

Yes, we are asking that people who live or work in Shasta County be vaccinated here. 

Vaccine is free, regardless of insurance status. Providers, however, can charge for administering the vaccine, which insurance would cover. Providers can get this fee reimbursed by the patient’s public or private insurance company or, for uninsured patients, by the Health Resources and Services Administration’s Provider Relief Fund.

Neither version of the vaccine contains a live virus, so they do not cause COVID-19. Instead, the vaccine boosts your immune system, preparing it to take on COVID-19 and keep you safe.

Yes. Vaccines protect you from getting sick from COVID-19, but you may still be able to transmit the virus. Because we are still learning about immunity to this virus, it is important to continue to wear a mask and socially distance even after getting vaccinated, until more people receive vaccines.

Yes, but studies are showing that they are not as effective in protecting against some of the variants. However, vaccine is still the best option to protect yourself and the community. 

There is no evidence that the vaccine causes mutations or cellular defects associated with infertility. 

Planning & Development

The California Department of Public Health worked with local health departments to plan for and distribute COVID-19 vaccines. Some types of vaccines require ultra-cold freezers and are delivered in large quantities. Shasta County Public Health has an ultra-cold freezer, as do other North State providers, so they can properly maintain and administer COVID-19 vaccine as well as meet additional federal and state requirements.

Shasta County sends a weekly request to the state Department of Public Health.