The WHO recommends vaccination against 12 deadly diseases in childhood, but how long does protection last, and how do they work?

Bacille Calmette-Guérin (BCG) revaccination is not efficacious for preventing sustained Mycobacterium tuberculosis infection, ...

The head of Pasteur Institute of Iran (PII) announced the export of more than 700,000 doses of the BCG vaccine to the ...