vaccination against cancer some countries have also been inoculating boys in recent years 10 year old layon is getting his 1st h.p.v. jab from his pediatrician at this age it's particularly effective the immune system reacts very strongly to the vaccine. and we try to give the vaccination as early as possible that is by the age of 14 that has the advantage that we need to administer to vaccinations and children at that age are unlikely to have had their 1st sexual encounters and have faced the danger of infection. doctors recommend that the h.p.v. vaccination be given between the age of 9 and 14 as it's been shown to work best if it's administered then. so that it. but take up is still low in many countries even though the vaccine is safe and effective. the immunologist and. says that h.p.v. . vaccination makes sense for everyone he says the body can cope with most viruses but our immune responses don't generally offer long lasting protection. for nutrition if we know that in the case of a natural infection the immune response is low and doesn't last so a person can get infected by the same