Table III.

Estimated Dose of SARS‐CoV for Residents in Amoy Gardens During the Outbreak in 2003

(a) Estimation Based on the Assumed Number of Residents
Floor (Level)	Number of Reported Cases	Number of Residents*	Attack Rate	Estimated Dose (PFU)
Lower (4–13)	12	320	0.038	16
Middle (14–23)	46	320	0.144	63
Upper (24–36)	41	416	0.099	42
Overall	99	1056	0.094	40

(b) Estimation Based on the Number of Affected Flats
Floor (Level)	Number of Affected Flats**	Total Number of Flats	Attack Rate	Estimated Dose (PFU)
Lower (4–13)	9	80	0.113	49
Middle (14–23)	26	80	0.325	160
Upper (24–36)	26	104	0.250	117
Overall	61	264	0.231	107

*Assumed that each flat has four residents.

**Number of flats where at least one case was reported.