Bakit kung kailan nagka-flu vaccine yung anak ko saka sya lagi nagkaka ubo at sipon?

Sometimes it happens na kapag ngpa vaccine na down ang resistensya, dun talaga ngkakasakit. We have to make sure that the person who's going to have flu vaccine should be completely in good health. Otherwise, pwedeng mgfever, sipon or ubo since we injecting virus to keep our system immune to it.