Thread by @DrEricDing

Whoa—New study found active #SARSCoV2 in the intestines of children for up to 36 days—70% of infected children carried the active virus without showing any symptoms, giving worry to “invisible transmitters”. Of 22 cases, 20 were children under age of 6. 🧵
std.stheadline.com/realtime/artic…

2) Stool samples from a two-year-old who returned from overseas still tested positive after 36 days.

CUHK collected 17.5k stool samples and successfully detected 22 confirmed cases, of which 20 were children under the age of 6.

3) “After the child recovers, even if he has antibodies & the respiratory tract samples are negative, the intestinal tract can continue to carry the active virus for a long time, and the stool is positive for the virus, which may pose a risk of transmission.”

4) fecal aerosol transmission recognized? Yes.

➡️9 infections in 3 families due to vertically shared toilet drainage pipes + aerosols from pipes.

To prove it, tracer gas was released into drainage system & shown to come out of other apt.

➡️Fecal airborne is real. #COVID19

5) It seems this septic gas system pipe issue is many unique problem to many condominiums.

https://twitter.com/drericding/status/1342325491093614592

6) We need to ensure U-traps of floor drains are not dried out. Dried out U traps allow virus aerosols to enter from another apt.

https://twitter.com/DrEricDing/status/1342324902020452353

7) 18 years ago, the same thing with pipe issue led to a large outbreak of the old SARS in Hong Kong.

https://twitter.com/drericding/status/1342332054894235648

8) Any more fecal aerosol studies? Oh PLENTY. Here is another study that showed a U trap that dried out led to transmission of fecal aerosols via sewer pipes.

https://twitter.com/jljcolorado/status/1286666919869726728

9) And to be clear, are fecal aerosols viable for infection? Yes, they are infectious.

wwwnc.cdc.gov/eid/article/26…

10) Here is how fecal aerosols transmission between apartments in a high rise building works. It’s quite simple actually. It’s airborne thru the pipes - and ends up going thru any apartment with an empty U-trap drain.
cnn.com/2020/02/12/asi…

11) Whether fecal or oral - the key thing is that the coronavirus is airborne! 6 feet not enough indoors.

https://twitter.com/drericding/status/1379189410877562890

12) Fecal sewage surveillance of the coronavirus is also become widely used. Here Ottawa 🇨🇦 used it to monitor their sewage for the virus levels.

https://twitter.com/drericding/status/1367974873843253255

13) Fecal transmission via a sewage pipe leak maybe also led to transmission in another outbreak analysis.

https://twitter.com/drericding/status/1317262198520020994

14) Finally, there was also evidence that the #SARSCoV2 was first detected in November 2019 in 🇮🇹—corroborated by both a case in a child & separately also wastewater positive samples in Italy during that same time.

Fecal virus surveillance & aerosol transmission are both key.

https://twitter.com/drericding/status/1345438947137236993