Breast milk has prebiotics help in strengthening the gut and boost immunity. If breastfeeding is not possible choose formula that has prebiotics aptamil is one such

There is nothing better than breastfeeding. But if the mother is not able to breastfeed, then formula milk can be used. Currently there is such a formula milk in the market which is made keeping in mind the growth, immunity etc. of children, so it cannot be said that the immunity of children who drink formula is weak. However you choose formula milk, make sure that formula milk contains of prebiotics, becoz prebiotics are good for the gut and immunity of babies.

Breastfeeding is best. But in face breastfeeding is not an option then formula is the best choice. Look for formula which is close to breastmilk and contains prebiotics. Aptamil is one good choice for formula

Yes ,Breastfed babies do have higher immunity which protects them throughout their life. And during this pandemic it is utmost necessary to build our babies immunity .