- Why do people need vaccines? What is immunization? What is immunity?
- How can people become immune (protected)?
- Are there different types of vaccines?
- Can people receive multiple vaccinations during one visit to the doctor?
- Are there any dangers to being immunized?
- Can people with severe egg allergies still get an annual influenza vaccination?
- What reactions are likely after an immunization?
- Who should not receive a vaccine?
- What vaccines can women receive while pregnant?
- What are invalid reasons for postponing vaccination?
- Why do people keep getting vaccines if the numbers of cases of the vaccine preventable diseases are at a record low in the United States?
- Is there any financial help for people who have been injured by vaccines?
- Is there anything different that health-care workers need to do compared with non-health-care workers?
- Do people need any additional vaccinations for foreign travel?
- Where can people find additional information on immunizations?
Who should not receive a vaccine?
There are two types of contraindications (reasons not to give a vaccine): permanent and temporary.
- The following are permanent contraindications to vaccination:
- severe allergic reaction to a vaccine component (animal proteins [eggs], antibiotic, stabilizer, or preservative) or following a previous dose of the vaccine;
- encephalopathy within seven days of a pertussis vaccination (not from another identifiable cause). This reaction is very rare since the introduction of acellular pertussis vaccine.
- The following are precautions/temporary contraindications to vaccination:
- Pregnancy: Although the risk of vaccination during pregnancy is mostly theoretical, caution is advised. Therefore, women who are known to be pregnant should not receive any of the live vaccines (Table 2). Inactivated vaccines are considered generally safe during pregnancy and should be used when indicated (Table 3). See the CDC for a complete listing of approved vaccines during pregnancy.
- Immunosuppression: People with active cancer, leukemia, or lymphoma (or people taking high doses of steroids) should not receive live vaccines but can receive inactivated vaccines.
- Human immunodeficiency virus (HIV): Vaccination depends on the severity of the illness. In asymptomatic (without symptoms) individuals, many vaccines are considered safe. In general, the inactivated vaccines are safe for both symptomatic and asymptomatic individuals infected with HIV.
- Moderate to severe illness: If someone is ill with more than a simple cold, earache, diarrhea, or other minor illness, vaccination should be postponed until the illness is over.
What vaccines can women receive while pregnant?
Women who are pregnant should not receive the MMR, oral typhoid yellow fever, varicella, or zoster vaccines. These vaccines are made from live attenuated viruses and potentially could cause a problem. Pregnant women may receive tetanus and influenza vaccines as needed. It is safe to receive hepatitis A & B, meningococcal, and pneumococcal vaccines.