⚠️1 person ➡️ infects cluster of 70 other people.
And that 1 person? No symptoms. #COVID19
Be safe, #WearAMask
And that 1 person? No symptoms. #COVID19
Be safe, #WearAMask
2) An asymptomatic person infected with #SARSCoV2 returned to Heilongjiang Province, China, after international travel. The traveler’s neighbor became infected and generated a cluster of >71 cases, including cases in 2 hospitals. wwwnc.cdc.gov/eid/article/26…
3) Genome sequences of the virus were distinct from viral genomes previously circulating in China.
➡️ This means we are sure it was an imported case.
➡️ This also means case importation is a major project for containment.
➡️ Hence why state-to-state quarantines needed.
➡️ This means we are sure it was an imported case.
➡️ This also means case importation is a major project for containment.
➡️ Hence why state-to-state quarantines needed.
4) “On April 9, investigators also learned that A0, B1.1’s neighbor, had returned on March 19 from the United States, where COVID-19 cases had been detected. Investigators performed serum antibody tests on A0 on April 10 & 11. The serum IgM was negative but IgG was positive”
5) “indicating that A0 was previously infected with SARS-CoV-2 (5,6). Therefore, we believe A0 was an asymptomatic carrier and that B1.1 was infected by contact with surfaces in the elevator in the building where they both lived”
➡️ Keyword: elevator.
➡️ Keyword: elevator.
6) “As of April 22, 2020, A0 remained asymptomatic, and a total of 71 SARS-CoV-2–positive cases had been identified in the cluster.
Our results illustrate how a single asymptomatic SARS-CoV-2 infection could result in widespread community transmission.”
Our results illustrate how a single asymptomatic SARS-CoV-2 infection could result in widespread community transmission.”
7) “This report also highlights the resources required for case investigation and challenges associated with containment of SARS-CoV-2. Continued measures to protect, screen, and isolate infected persons are essential to mitigating and containing the COVID-19 pandemic.”
8) “Figure. Timeline of exposure. A0 returned from US on March 19, tested negative, & self-quarantined in apt & remained asymptomatic. However, IgG was positive in retests: I.e. A0 was likely asymptomatic carrier. B1.1, A0’s downstairs neighbor, likely infected via elevator.” 
