The chain of infection from the patient cluster of the loading and unloading department at Tan Son Nhat airport lost the FO mark, there was a negative F1 situation but F2 was positive, experts said the situation was “complicated”.
Recognizing 24 suspected cases related to the group of Tan Son Nhat patients on the morning of February 8, Health Minister Nguyen Thanh Long said that there are cases that may have been infected but could not be detected by RT-PCR testing. .
“The most worrying thing is that the epidemic has gone through several infection cycles, but we have not yet caught the beginning of the chain. The risk of infection is too complex,” said Minister Long.
The tactic of stamping out the epidemic in Ho Chi Minh City at this time is to expand the scope of traceability, fast zoning, and thoroughly sampling. Certain areas need to be considered for isolation and blockade under Directive 15, Directive 16.
Mr. Phan Trong Lan, director of the Pasteur Institute of Ho Chi Minh City, said that when detected, most cases had no symptoms. There was a negative F1, but F2 was positive, indicating that the virus had gone very far, difficult to detect. Positive cases appeared in 6 districts. Therefore, the problem of testing must be on top, sampling on a large scale, the number of samples will be very large.
“Only tests can catch the cases early, conduct tracing and control”, Mr. Lan said.
At the same time, Mr. Lan suggested the city have a plan to allocate test sample flow, not concentrating in one place. When taking samples, manage tightly to avoid confusion. When the results are returned at the right place, fast processing. Tracing team gathered samples for F1, zoned earliest.
Minister Long suggested the city take samples according to households, can test pool up to 16 samples. Pasteur Institute is required to increase the capacity from 30,000 to 50,000 samples, even 200,000 samples a day to meet the needs of large volume testing.
On the morning of February 8, Ho Chi Minh City recorded 24 new cases of suspected infection, related to “patient 1979”, 2002, 2003, 2004, 2005. In which, Binh Thanh and Go Vap each district 5 cases, all are F2 of “patient 1979”. District 12 has 7 cases. Tan Binh District 7 cases, including 5 cases of F2 involving Tan Son Nhat airport and two cases of going to a goat hotpot restaurant “patient 1979” used to eat.
24 suspected cases were taken to the Cu Chi field hospital.