Table 3. Estimated economic costs of WNND cases due to productivity loss, Sacramento County, California, 2005*.

Productivity loss	Value of work day missed†	Value of nonwork day missed‡	No. work days missed	No. nonwork days missed	No. patients		% Cases	Total costs for all cases
					<60	>60
For patients <60 y	$191	$125	50	10	31		100	$334,800
For patients >60 y		$125		60		15	100	$112,500
For caretakers		$125	25		8	4	26	$37,500
Total costs								$484,800

*WNND, West Nile neuroinvasive disease.
†Estimated by using data from BLS (17).
‡Estimated by using data from Grosse (18) and BLS (17).