Discussion: A life-long or since birth indicator, introduced in 2000, counts infants as no longer exclusively breastfed as
soon as anything else is fed to them. This is appropriate to do if for example data are being used to link infant feeding
patterns with vertical transmission of HIV or later patterns of infant allergy. However, this indicator underestimates the total
extent of exclusive breastfeeding, since some women interrupt but then resume it after a period of supplementation
(which could for example only be a small amount of water given a single time).