Negative cases Positive cases Families of positive cases Number of positive household contacts*
Mother (n/N) Father (n/N) Sibling (n/N) Father’s sister (n/N) Uncle’s wife (n/N) Uncle (n/N) Grand-father (n/N) Grand-mother (n/N) Total (n/N)
<1-year-of age 105 35 22 15/35 4/18 5/15 1/2 1/1 1/1 2/5 1/5 30/82
≥1-year-of age 20 13 7 4/11 4/7 3/5 1/1 - - - 0/1 12/25
TOTAL 125 48 29 19/46 8/25 8/20 2/3 1/1 1/1 2/5 1/6 42/107
* Distribution of the family members: of 22 families of the positive cases aged <1 year: mother only 9, mother and father 3, uncle’s wife 1, sibling 3, mother and grandfather 1, grandfather 1, father and grandmother 1, uncle and uncle’s wife 1, mother and sibling 2; and of 7 families of the positive cases aged ≥ 1 year: mother only 2, mother and father 1, father and father’s sister 1, father and sibling 2 , mother and sibling 1. n: number of contacts infected , N: number of contacts tested.
Table 1: Distribution of the positive cases and their household contacts according to age groups.