The Randomized Control Trail included 4,172 low-birth weight children between February 2008
and September 2013 in Bissau. The children who were included in the RCT and who are living in
the Bandim Health Project study area will be visited. The study assistants will ask about the
health of the child and of both parents. Furthermore, Bacille Calmette-Guerin (BCG) scar
status of both child and parents will be checked.