. 2024 Jan 9;15(2):e02372-23. doi: 10.1128/mbio.02372-23

TABLE 2.

Incidence of binary clinical outcomes after H1N1 challenge

	Unvaccinated N (%)	Vaccinated N (%)	P-value^a
Total N	37	37
MMID^b	30 (81%)	18 (49%)	0.0068
Flu^c	34 (92%)	22 (59%)	0.0023
Symptoms^d	35 (95%)	27 (73%)	0.0242
Shedding^e	30 (81%)	23 (62%)	0.1208

^{^a}

P-values from Fisher’s exact tests with no adjustment for multiple comparisons. P < 0.05 considered statistically significant.

^{^b}

MMID defined as at least one influenza symptom plus at least 1 day of viral shedding.

^{^c}

Flu defined as at least one influenza symptom, plus either at least 1 day of viral shedding or a greater than fourfold increase in either hemagglutinin inhibition titers or neuraminidase inhibition titers.

^{^d}

Symptoms defined as presence of at least one influenza symptom.

^{^e}

Shedding defined as presence of shedding on at least 1 day.