Table 1. Prevalence of T. vaginalis in women attending New York City STD clinics.

Clinic	Clinic Location	No. swabs	No. positive by wet mount n/N* (%)	No. positive by culture (%)	No. positive by PCR (%)
A	Brooklyn	28	1/25 (4)	2 (7.1)	2 (7.1)
B	Manhattan	36	1/20 (5)	4 (11.1)	5 (13.9)
C	Manhattan	41	1/27 (3.7)	2 (4.9)	3 (7.3)
D	Queens	37	0/15 (0)	0 (0)	1 (2.7)
E	Brooklyn	37	0/19 (0)	5 (13.5)	7 (18.9)
F	Queens	29	2/25 (8)	3 (10.3)	3 (10.3)
G	Bronx	29	NA	3 (10.3)	5 (17.2)
H	Manhattan	33	0/30 (0)	0 (0)	0 (0)
Total		270	5/161 (3.1)	19 (7.0)	26 (9.6)

The number of vaginal swabs collected at each clinic is shown, followed by the number of swabs found to be positive for T. vaginalis by wet mount, in vitro culture and PCR. NA: technician not available at clinic for wet-mount diagnosis during duration of sample collection.

*: n represents the number of samples diagnosed as positive via wet mount, and N represents the number of samples tested by wet mount. Type 1 parasites are more likely to be infected with the T. vaginalis virus TVV and are more susceptible to metronidazole, compared to type 2 parasites.