Fig. 1

Longitudinal changes of total IgG, subclasses and IgA and IgM. Red lines ad dots indicate IgG levels of our cohort of HEU Malawian infants. Dotted lines indicate reference values from recent studies on healthy infants of Turkish (grey) [19], Canadian (yellow) [24], Thai (blue) [25] Chinese (green) [26], and Indian (purple) [27] origins