Social & Preventive Medicine All of the followng statements are true about PT vaccine except – A It should be stored in deep freezer B Exposure to direct sunlight, when in use should be avoided C Store stocks are needed for three months at PHC level D Half - used vials should not be put back into the cold chain after the session 💡 Explanation All of the followng statements are true about PT vaccine except - ✓ Correct Answer: A. It should be stored in deep freezer