Immunity Period After One Dose of Yellow Fever Vaccine in Adults and Children (Paraiba Study)

This is an interventional prevention trial for Yellow Fever Vaccine focused on measuring Yellow Fever Vaccine, immunity evolution Read More

Inclusion Criteria:

1. Ability to understand and sign the Informed Consent Term
2. Acceptance in participate on the study after reading, understanding and signed the Informed Consent Term
3. Participants of both sexes aged 9-4 years, 11 months and 29 days, after it was provided they have not received or have to receive the MMR or Tetraviral vaccine within 30 days or less.
4. Healthy adults of both sexes aged between 18 and 50 years since they have not received or have to receive the MMR or Tetraviral vaccine within 30 days or less.
5. Residence fixed in the municipality where the Basic Health Unit will held vaccination and collection of biological material samples (blood) for the study at the time of participant enrollment.
6. Availability to follow the proposed activities throughout the study period.
7. Agreement to provide name, address, telephone number and other information for personal contact is possible, if necessary (for example, event of failure to visit scheduled for follow-up).
8. Availability to follow the study protocol.
9. Acceptance for serological testing for HIV.
10. In adult women, it will be conduct pregnancy test (TIG).
11. Being in good health with no significant medical history (such as those described in Exclusion criteria).
12. Physical examination of screening with no significant clinical changes.

Exclusion Criteria:

1. Previous vaccination against yellow fever.
2. Presumed or confirmed pregnancy at any stage.
3. Women who are breastfeeding.
4. People in use, or have made use of immunosuppressants medicines.
5. People with personal history of anaphylactic reaction to food, drugs or vaccines.
6. People with personal history of allergy to egg ,erythromycin, kanamycin or gelatin.
7. People with autoimmune diseases.
8. Individuals seropositive for HIV.
9. People with thymic disease history, such as thymoma, myasthenia due to thymectomy and thymoma.
10. People who have received immunoglobulin, blood transfusions or derivatives in the last 60 days.
11. People who have received live virus vaccines or against cholera in the last 30 days, or who plan to receive them within 30 days after vaccination against yellow fever.
12. Individuals who have resided in an endemic area.
13. People with acute febrile disease and a compromised general health.
14. People immunosuppressed by disease (eg, cancer, AIDS, HIV infection with impaired immunity, etc.) or drugs (immunosuppressive drugs, radiotherapy, etc.).