We found that both ifnar1 and ifnar2 were upregulated in response to H1N1 and H5N1 viruses within 6 hours post-infection compared to mock infection (Figure 4A, B), but that by 24 hours, there was a reduction of both ifnar1 and ifnar2 compared to mock infection (Figure 4C),. Here, IFNAR2 is linked to infection.