https://www.nature.com/articles/s41598-023-47829-8
"Exhaled SARS-CoV-2-containing aerosols contributed significantly to the rapid
and vast spread of covid-19. However, quantitative experimental data on the
infectivity of such aerosols is missing. Here, we quantified emission rates of
infectious viruses in exhaled aerosol from individuals within their first days
after symptom onset from covid-19. Six aerosol samples from three individuals
were culturable, of which five were successfully quantified using TCID50. The
source strength of the three individuals was highest during singing, when they
exhaled 4, 36, or 127 TCID50/s, respectively. Calculations with an indoor air
transmission model showed that if an infected individual with this emission
rate entered a room, a susceptible person would inhale an infectious dose
within 6 to 37 min in a room with normal ventilation. Thus, our data show that
exhaled aerosols from a single person can transmit covid-19 to others within
minutes at normal indoor conditions."
Via Violet Blue’s
Pandemic Roundup: December 7, 2023:
https://www.patreon.com/posts/pandemic-roundup-94248334
Cheers,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
