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Crying is the nature of babies.
BCG vaccine is a live vaccine made from the suspension of attenuated Mycobacterium bovis.
In addition, the BCG vaccine can also be used to treat asthmatic bronchitis and prevent children's colds, for adjuvant treatment of tumors, and for the treatment of bladder carcinoma in situ and prevention of recurrence
Researchers conducted a randomized, double-blind trial in which 198 elderly patients were vaccinated with BCG or placebo when they were discharged from the hospital, and they were followed up for 12 months to see if there were new infections
This study shows that BCG vaccination is safe.
References: Evangelos J.