Which of the following statements is true about BCG vaccination? (AIPG 09)
|A||Distilled water is used as diluent for BCG vaccine|
|B||The site for injection should be cleaned thoroughly with spirit|
|C||Mantoux test becomes positive after 48 hours of vaccination|
|D||WHO recommends Danish 1331 strain for vaccine production|
For BCG vaccine, normal saline is recommended as a diluent for reconstituting the vaccine, as distilled water may cause irritation.
Vaccine must not be contaminated with an antiseptic or detergent. If alcohol is used to swab the skin, it must be allowed to evaporate before the vaccine is given.
The WHO has recommended the 'Danish 1331' strain for production of BCG vaccine.
Normally, the individual becomes Mantoux-positive after a period of 8 weeks has elapsed, but sometimes about 14 weeks are needed.