Health

The outbreak lurks in the alleys of Hanoi


HanoiSmall alleys with dense population density, the control of Covid-19 in some places is not tight, so there is a high risk of outbreak of a new outbreak, according to experts.

After 36 days of social distancing according to directive 16, the number of new cases in Hanoi remains high, with new outbreaks continuously appearing. On August 29, the city recorded 133 infections – the highest number of new cases since the epidemic appeared in the capital (March 6, 2020).

One of the The most complicated outbreak today is the one in Thanh Xuan Trung ward, Thanh Xuan district, recorded 303 infections from August 23 to and tends to continue to increase.

This outbreak originated from the first two patients at lane 330 Nguyen Trai, mother and daughter. On the afternoon of August 22, the 48-year-old mother took her 28-year-old daughter to a rapid test at Hong Ngoc Phuc General Hospital, the PCR test confirmed positive on the morning of August 23. In just three days of screening and tracing, the health sector recorded 71 more positive cases residing in two alleys 328 and 330 above and adjacent areas are Thang Long Tobacco collective, Rang thermos bulb collective. East, No. 1 Tool Factory area.

Mr. Khong Minh Tuan, Deputy Director of the Center for Disease Control (CDC) in Hanoi, said that this cluster of cases has reached the second or third round of infection. The two alleys are old residential areas with very high population density. , should be infected a lot. This outbreak was detected late, leading to a large number of cases, now being blocked, but the situation is still complicated.

In this ward, some dormitories still share toilets, which is the risk of infection, according to Mr. Tuan. This morning, the CDC suggested the county take measures to evacuate these households to reduce the density of people. Other households need to keep family members apart, regularly wear masks, and arrange different meal times to minimize infection.

Dr. Nguyen Thu Anh, epidemiologist, director of Woolcock Institute of Medical Research in Vietnam, analyzed the Thanh Xuan Trung outbreak with a diameter of 2 km in the core area, located in an area with a diameter of 4.5 kilometer. The population density of this area is up to 40,000 people/km2, 16 times higher than the average population density in Hanoi. Characterized by a large population, many small alleys, inside are cramped and humid inns, many small sidewalk shops, markets … the risk of a strong outbreak.

Cases related to this cluster are quite diverse, including sellers at Nga Tu So market or small shops, pharmacy staff, sales staff, supermarket security, market shoppers, shopping, haircuts; and those who are often at home with unknown sources of infection.

“This place can become a ‘pan of fire’ if no timely control measures are taken,” Ms. Thu Anh said.

Outbreak model of Thanh Xuan Trung ward with more than 300 infections detected in 7 days. Photo: Provided by Dr. Thu Anh

According to information from the Thanh Xuan District Epidemic Prevention and Control Department, functional forces have set up 314 duty posts (including 62 checkpoints, 252 community Covid-19 checkpoints), 112 hard fences, a basic patrol team activities, an interdisciplinary Covid-19 team, 30 mobile patrol teams, 145 community Covid-19 teams to monitor the implementation of social distancing and regulations on epidemic prevention and control.

Thanh Xuan district also activated the concentrated isolation area at building A1, the resettlement area in Kim Giang ward (15 floors, expected capacity 500 beds).

Ward medical staff go from house to house to call people to take samples for testing.  Photo: Ngoc Thanh

Ward medical staff go from house to house to call people to take samples for testing. Photo: Ngoc Thanh

The cluster of songs in Thanh Xuan Trung ward shows the risk of outbreaks in high-density areas, narrow with many small streets, alleys or many apartments close together, according to Secretary of the Hanoi Party Committee Dinh Tien Dung discussed with the press on August 29. Some other clusters of cases in Giap Bat ward (Hoang Mai district); previously in Van Chuong ward, Van Mieu (Dong Da district), Lien Ninh commune, Dai Ang (Thanh Tri district) or HH4C Linh Dam apartment complex (Hoang Mai district).

Secretary Dung acknowledged that disease control in densely populated areas was not stable. Areas that have been blocked off, the implementation of isolation is not strict, there is a phenomenon of “tight outside, loose inside”. Positive cases of nCoV were also detected in some residential markets and supermarkets; driving “green stream”, driving ambulance 115…

The epidemic situation is still complicated and unpredictable for many reasons, according to a report by the City People’s Committee. In addition to large outbreaks, Hanoi now has scattered and scattered cases in the community. Delta variant spreads strongly, has a short transmission cycle (about 2 days), the case may still be lurking in the community and has not been detected.

“It is important that people who have been in contact with positive cases must voluntarily declare themselves to continue tracing and zoning out the epidemic,” Mr. If you feel that you have a questionable health problem related to Covid-19, you must immediately report it in order to get a sample for testing.

Since the beginning of the fourth outbreak, Hanoi has recorded 3,436 infections (excluding the number of cases at central hospitals), including 1,539 community infections.

Thuy Quynh – Le Cam

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