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Antibody test results showed that a 65-year-old male patient in Ngu Hanh Son district used to be infected with CoV, currently two tests are negative.
On the night of September 6, the Da Nang Health Department said antibody tests using the rapid test method and the Mac Elisa method showed that the suspected patient had positive results for antibodies.
The medical profession tested antibodies using the Mac Elisa method with the patient’s brother, wife and daughter and found positive results as well. And the test result by RT-PCR method is negative for nCoV.
“The test result is positive for antibodies, which means that in the past, the patient had been infected with SARS-CoV-2,” commented the Da Nang Health Department.
Da Nang doctors talk about the recurrence of the nCoV outbreak, July 2020. Image: Nguyen Dong.
Test results for patients and three family members who are positive for antibodies need more scientific basis and experience, the Da Nang Health Department said, saying it would report to the Ministry of Health for advice. .
The patient is currently isolated and treated at Hoa Vang Field Hospital and samples will continue to be collected for testing in the coming days. Relevant individuals continued to be examined for testing, of which six were concentrated in isolation.
Before that, the suspected patient had been treated at Danang Hospital and Da Nang Orthopedic and Rehabilitation Hospital in early July. On September 5, he developed a cough, fever, and was admitted to C Da Nang Hospital. emergency.
Hospital C took a sample for nCoV testing and found positive results on the morning of September 6. This sample continued to be sent to the Da Nang Center for Disease Control (CDC) for analysis and the results were positive.
On September 6, the Hoa Vang Field Hospital, which is treating patients, took samples at 8:45 am; The CDC technician in Da Nang took samples at 9 a.m. and two test results conducted by the CDC came back negative on the same afternoon.
Ngu Hanh Son District has blocked the entire area of 7 homes around the residence of the suspected case, spraying disinfectant chemicals to ensure the disease prevention process.
Results of the antigen test by the RT-PCR method with 7 other people, including his son-in-law, two grandchildren who live in the same house with little contact with the patient; sister-in-law and three related individuals were also negative for nCoV.
RT-PCT is a useful test method to find out if the antigen (pathogen – nCoV) exists in the body and is potentially infectious at the time of sampling.
An antibody test is that when a person has a disease caused by an antigen, the body will produce antibodies in response to that antigen.
The antigen test is to determine at the time of the test, whether the body is infected with the antigen or not. An antibody test looks for antibodies, which are produced when the body has received an antigen.
