Table 2. Prevention and control measures used by pandemic (H1N1) 2009 case-patients and household contacts, Victoria, Australia, May 18–June 3, 2009*.

Reported measure	No. (%) index case-patients, n = 36	No. (%) household contacts, n = 131	p value†
Antiviral
Treatment	11 (30.6)	6 (4.58)	<0.001
Prophylaxis	0	60 (45.8)	<0.001
Quarantine duration, d
>1	32 (88.9)	91 (69.5)	0.013
>1 with index case-patient	NA	80 (61.1)

*NA, not applicable.
†Fisher exact test statistic used when expected value <6.