NOS2 and infection: Carriers of the rare A-allele of the iNOS G2087A gene (AA-homozygotes and GA-heterozygotes, n = 59) had lower minimum systolic blood pressure during PUUV infection when compared with the non-carriers (GG-homozygotes, median 110, range 74–170 vs. 116, range 86–162 mmHg, respectively; p = 0.019).