Study: Exposure to one nasal droplet enough for Covid infection(theguardian.com)
theguardian.com
Study: Exposure to one nasal droplet enough for Covid infection
https://www.theguardian.com/world/2022/feb/02/exposure-to-one-nasal-droplet-enough-for-covid-infection-study
> Thirty-six healthy volunteers aged 18-29 years old were enrolled according to protocol-defined inclusion/exclusion criteria.
> All participants were inoculated with 10 TCID50 of SARS-CoV-2/human/GBR/484861/2020 (a D614G-containing pre-alpha wild-type virus; Genbank Accession number OM294022) by intranasal drops (Figure 1b). Eighteen participants (53% according to the per protocol analysis, [95% CI [35,70]) subsequently developed PCR-confirmed infection.