visit number
Fever
Chills
Reduced activity/bed ridden
Poor appetite
Headache
Upper respiratory
Sore in mouth
Skin rash
Digestive system
Malaria
Typhoid
0 mild or severe
age at baseline
time (years)
severe & mild vs. none
severe vs. mild/none
sin 2*pi* years
cos 2*pi*years
subject id number