The “vaccines” are working. They are a cure for Wuhan flu hysteria, not a vaccine for the flu. Hysteria sufferers who get the vaccine overcome their hysteria and drop their precautions thus get the flu and help reach herd immunity. The success of the vaccinations is measured by the number of vaccinated who get the flu.
I don't know - I'm seeing some pretty severe outbreaks now (of the hysteria, of course.) Maybe a booster is in order.