Table 6

Number of villages with optimal, moderate, alarm and emergency house index (H.I.)
District no. Sample villages Optimal index Moderate index Alarm index Emergency index
6501 20 1 0 5 14
6502 9 1 1 1 6
6503 8 0 0 1 7
6504 12 0 0 4 8
6505 7 0 0 1 6
6506 13 1 1 2 9
6507 6 0 0 1 5
6508 11 0 0 1 10
6509 6 0 1 2 3

According to the risk levels set by National Institute of Health (NIH), Thailand optimal control is a H.I. < 1% and emergency levels of infestation are indicated by a H.I. of 10% or greater. Further as per Ministry of Public Health Thailand (MOPH), Phitsanulok two more groups were categorized, i.e. H.I. between 1% and 5% as moderate index and H.I. between 5 to 10% as alarm index.

Sarfraz et al.

Sarfraz et al. BMC Public Health 2012 12:853   doi:10.1186/1471-2458-12-853

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