According to HCDC, the strategy of rapid testing once the source of infection is identified is the “key” to help control the infection chain at Tan Son Nhat airport.
Center for Disease Control Ho Chi Minh City (HCDC) has drawn the above, when summarizing 10 days of stamping out the epidemic, since the city’s active surveillance system Detecting point-to-point cases at Tan Son Nhat airport epidemic cluster – “patient 1979”, February 5. From this case only, 8 employees loading, unloading and monitoring of goods at the airport with the same group and 26 family members of the group were found to be positive for nCoV. To date, this chain of infections has stopped at number 35.
According to HCDC, to control the infection chain, the city strictly applies the motto “fast tracing, quick control” through investigation measures, expanding the range of exposure and especially expanding testing. both in space and time.
Specifically, when receiving information with some aggregate samples of the group of suspected infected loading and unloading workers, although it is not yet determined who the infected individual is, the city immediately traced and zoned all related cases, do not miss any risk cases. Thanks to that, a large chain of cases was detected.
“The strategy of rapid testing is the key to success,” said HCDC representative.
The test is performed in multiple groups, including high-risk such as F1, extending to F2, and broadly sampled surrounding households in more than 30 blockade sites involving patients. In particular, test results are returned within 24 hours, promptly responding to the speed of traceability and extensive monitoring. Once the results of extensive screening tests and risk assessment are available, the blocked sites will be partially or completely removed, minimizing the impact on people’s lives.
Together with testing, HCDC determines that the source of infection must be quickly found. With this infection chain, initially, the city’s assessment is likely to originate from the staff of the management team and the cargo and baggage handling team of the ground service company (VIAGS) at Tan airport. Son Nhat.
Therefore, the health sector took a second urgent sample for all VIAGS employees and all members of their families. A total of 5,400 samples were taken, including more than 1,600 employees and more than 3,800 family members. In it, three more employees and a family member were found in the 35-case infection chain.
In addition, the city has performed tests for 1,570 F1, 1,376 F2 and 9,864 cases at sites involving patients. All were negative, which is the basis for the city to uncover the locations that are no longer at risk. At the same time, the city conducted centralized quarantine for all the most at-risk groups. This is the basis to initially confirm that the city has basically controlled the infection chain after 4 consecutive days of not discovering new cases.
However, Ho Chi Minh City is still a place with many potential risks of outbreaks. From the afternoon of the 30th of Tet to the end of the third day of the New Year (ie February 11 to February 14), the campaign of sampling and testing at wholesale markets, traditional markets, bus stations, inns, around industrial zones .. is still working A total of 9,480 samples, of which 2,939 were from medical staff, were all negative for nCoV.
Yesterday afternoon, at the Standing meeting of the Government with the National Steering Committee for Covid-19 Prevention, Prime Minister Nguyen Xuan Phuc and Minister of Health Nguyen Thanh Long both highly appreciated the city’s efforts to trace and localize the epidemic HCM City. According to Minister Long, Ho Chi Minh City has taken about 40,000 test samples, since February 13 until now, no more cases of infection have been detected in the community.
“Basically, the infection chain of Tan Son Nhat airport has been well controlled. Through community monitoring, it is found that the risk of pathogens in the community is quite low. We can rest assured with HCMC”, Mr. Long said.
However, the Ministry of Health requires the city to be non-subjective, continue to implement all measures to prevent epidemics, closely monitor, take samples for testing to screen for high-risk spots.