pop_tit_serv (inner arguments): +concept-Vaccine

Vaccines for the flu virus are almost impossible to create (vaccines are highly specific, if the virus changes, the vaccine is inneffective): ● this virus changes continuously and therefore – since it takes months of work since a virus is discovered – when the vaccine is ready the virus has already changed (and the vaccine is ineffective) ● the virus is “intelligent” and over the years […]