hi my baby has 2 years 8 months old last month she tested covid positive with only fever symptom and used antibiotics after 10 days she get negative I am afraid of third wave corona how to boost her immunity

A. first of all know that for protection and immunity from infections most important is timely vaccination as per also optional vaccines along with a healthy balanced diet which in a baby will be breast milk as it has all natural antibodies for fighting against infections along with a good hygiene maintainence. Also for covid 19 practice social distancing and also wearing a mask properly .