Ay, ganyan talaga sometimes kapag bata pa, ang immunity nila ay konti pa kaya mabilis kumalat ang virus lalo na kung maraming playmates or exposed siya agad after the antibiotics. A few of us mums noticed na after treatment, kung hindi careful sa hygiene or kung may bagong exposure, bumabalik ang sakit, so maybe observe muna for a day or two kung mas lumalala or hindi, pero honestly alam mo na, mas safe kung dalhin mo siya sa doctor ulit para ma-check kung iba na or parang continuation lang ng previous illness, gusto mo marinig directly from doc kung need ng another round or kung pwede lang home remedies muna.