On December 29, the Ministry of Health issued an official dispatch to adjust the definition of the case Covid-19. According to the Ministry of Health, currently, the Covid-19 epidemic situation is complicated in many countries and territories around the world with strains capable of spreading quickly and causing danger such as Delta and Omicron.
In Vietnam, the disease is basically under control, but the number of new cases tends to increase in some provinces and cities. In order to continue proactively strengthening surveillance, early detection of cases, and effective management of Covid-19 cases, the Ministry of Health requests Directors of Health Services of provinces and cities, heads of units under the Ministry of Health organizes monitoring of Covid-19 disease with target groups, specifically:
The Ministry of Health has made many changes in identifying cases F0 and cases F1- Illustration
A surveillance case (suspected case) is one of the following cases:
– Be a close contact (F1) and have at least 2 of the clinical manifestations such as fever; cough; sore throat; runny nose, stuffy nose; body aches, fatigue, chills; decreased or lost taste; decreased or lost sense of smell; pain, headache; diarrhea; shortness of breath; respiratory inflammation.
– Being a person with epidemiological factors (excluding F1) and having at least 2 of the above clinical manifestations.
– Being a person with a positive antigen rapid test result for SARS-CoV-2 virus.
– Person with epidemiological factors (excluding F1) is a person who is present on the same means of transport or at the same place, event, workplace, class… with a confirmed case (F0) being in the hospital. transmission period.
– Residents, coming from active outbreak areas.
The confirmed case (F0) is one of the following cases:
– Being a person who has tested positive for the SARS-CoV-2 virus by the method of detecting the genetic material of the virus (PCR).
– Be a close contact (F1) and have a positive antigen rapid test result for SARS-CoV-2 virus.
– Being a person who has clinical signs of Covid-19 (a suspected case and has a positive rapid antigen test result for SARS-CoV-2 and has epidemiological factors (excluding F1).
– Being a person who has a positive antigen rapid test result 2 times in a row (2nd test within 8 hours since the 1st test result for SARS-CoV-2 virus and has epidemiological factors) excluding F1).
Bio-products for rapid testing of antigens with SARS-CoV-2 virus must be on the list licensed by the Ministry of Health. Rapid antigen testing performed by medical personnel or by suspected infected persons under the supervision of medical personnel by at least one of direct or indirect means through remote means.
Close contact (F1) is one of the following:
– Persons who have direct physical contact (shaking hands, hugging, kissing, direct skin-to-skin contact, body…) with F0 during the transmission period of F0.
– The person wearing a mask has contact and communication within 2 meters or in the same narrow, closed space and for at least 15 minutes with the confirmed case (F0) while in the transmission period of F0.
– People who do not wear masks have close contact or communication within 2 meters or are in the same narrow, closed space with F0 during the transmission period of F0.
– Persons who directly care for, examine and treat confirmed cases (F0) during the transmission period of F0 without adequate use of personal protective equipment (PPE).
According to the Ministry of Health, the transmission period of a confirmed case (F0) is counted from 2 days before the onset (for a confirmed case without symptoms, the transmission period is counted from 2 days before the date of diagnosis). sample with a positive test result) until the test result is negative or the CT value is >30.
