West Nile Virus study suggests A negatives frequent among the infected

Results: Blood group A was more common in WNV cases (51%) than blood donors (39%) and group O less common (32% vs. 42%). D negativity within group A was higher in WNV than in blood donors (18% vs. 10%, p = 0.044). The frequency of secretors (Lewis(a-b+)) was 60% in WNV and 68% in donors (p = 0.16). HLA alleles C*08, DRB1*O4:O5, and DQB1*O2 occurred significantly less frequently in WNV than controls (p < 0.05 unadjusted for multiple testing) and DRB1*10:O1 more frequently (p = 0.039).

Source: https://pubmed.ncbi.nlm.nih.gov/27245377/

This is a small study, so more data is needed. In many of the diseases of viral origin, Rh negatives have been shown with low frequencies. One exception is dengue fever. The other this one. As expected, however, blood type O appears to do well.

We will post more studies if they come our way.