WHO, UNICEF to ensure 5-in-1 vaccine supply for Việt Nam The vaccine against diphtheria, tetanus and pertussis (DTP) for booster shots for children aged 18-24 months is currently out of stock, but DPT vaccine producers have affirmed their readiness to supply this vaccine immediately to Vietnam once a decision on procurement and bidding has been made. 08:55 | 16/06/2023