Strongyloides stercoralis infections were shown to be aggregated in households in an urban
slum community in Dhaka, Bangladesh. Parasitological data on 880 residents living in 280
households were analysed statistically using 3 different tests, each of which yielded
significant evidence of household aggregation of S. stercoralis infection. One test was
applied to the data after stratification for 4 variables which were previously shown to be
independently associated with infection. Evidence of household aggregation of infection …