All 13 pairs were within 60 days, and on review of case details, 11 met the household cluster
Of the sociodemographic variables only age and education are statistically significant factors, controlling for other sociodemo-graphic factors, along with one interaction between city area type and household cluster
. With the age increase of one year, respondents are 5% more likely to hold a negative view on their power to effect positive change in the neighborhood.
Second, because not all households or household residents were included in the household cluster
investigation, locally acquired dengue cases might not have been identified.
For household clusters
located near multiple facilities, the overlapping catchment areas are summed, providing better representation of the total service environment.
A household cluster
was defined as [greater than or equal to] 2 cases in the same household.
To determine the prevalence of recently acquired WNV infection and associated risk factors for infection, random household cluster
serosurveys were conducted in Staten Island and portions of Fairfield County, Connecticut, and Suffolk County, New York, during October--November 2000.
This finding is in contrast to those of most prior household cluster
surveys, in which few persons or none were found to be recently infected in randomly selected clusters (13,14,26,27).