Genome Center reveals results of study by Chinese researchers Regarding contamination of the 2019 coronavirus in COVID-19 patient shelters and risk reduction guidelines
Medical Genome Center, Ramathibodi Hospital, posted on its Facebook page. Center for Medical Genomics Subject: Lessons learned from the study of coronavirus 2019 contamination in COVID-19 patient residences and guidelines for reducing risks, stating that
COVID-19 outbreak This has raised concerns about transmission of the SARS-CoV-2 virus through contaminated surfaces. Also known as fuel transmission
A recent study by researchers from Shanghai Jiao Tong University and the Shanghai Huangpu District Center for Disease Control and Prevention provided insights into the decline of SARS-CoV-2 on surfaces in the residences of COVID patients. D-19 and the risk of transmission through objects Shared items
The study collected 2,233 surface samples from 21 types of objects in 141 COVID-19 patient residences. The surface was swabbed using RT-qPCR to detect SARS-CoV-2 RNA.
The results of the study found that Although SARS-CoV-2 RNA was detected on surfaces, contamination levels dropped significantly within just three days after the patient was isolated from their residence. The amount of SARS-CoV-2 RNA was reduced by 90%, which shows that Viruses decompose relatively quickly on surfaces. When the source of infection is eliminated
However, studies have found that wet areas such as sinks, faucets, and drainpipes had the highest detection rate of SARS-CoV-2 RNA, indicating that Viral RNA may persist longer on wet surfaces compared to dry surfaces, so extra care must be taken when cleaning and disinfecting these areas. To reduce the risk of spreading disease through used objects.
Risk rankings vary by surface type.
From the information in the study It can be concluded that Risk of fomite transmission of SARS-CoV-2 in residences of COVID-19 patients. There are differences according to the type of contact surface. The risks can be arranged in order from highest to lowest as follows.
1. Sink, faucet and drain pipe Highest risk This is because the detection rate of SARS-CoV-2 RNA is as high as 20%, which may be due to contamination from water used for hand washing.
2. Handkerchiefs and shared clothing Especially the bedsheets There is a secondary risk. This is because the detection rate of SARS-CoV-2 RNA is also high, which may be due to close contact and absorption of secretions.
3. Frequently touched surfaces such as doorknobs, stair railings, elevator buttons are at moderate risk. Because despite frequent contact But the detection rate of SARS-CoV-2 RNA was not very high.
4. Bathroom equipment such as toilet bowls and various handles. There is a relatively low risk. Although SARS-CoV-2 RNA was detected, the detection rate was lower than in the first group.
5. Toys and objects that may be contaminated Has the lowest risk Although children may put toys in their mouths But the detection rate of SARS-CoV-2 RNA on toys is not as high as it is on frequently used surfaces like sinks.
Applying information from this study
1. Isolate COVID-19 patients Leave the area with other family members.
2. Emphasize the importance of regularly cleaning and disinfecting high-risk areas such as sinks, faucets, drains, and bedding to reduce contamination and the spread of the virus.
3. Advise people to avoid sharing personal items. especially handkerchiefs and clothes To reduce the risk of spreading infection through touching surfaces.
4. Encourage the cleaning of frequently touched surfaces such as doorknobs, stair railings, and elevator buttons regularly. To reduce the accumulation of viruses
5. Be more careful when cleaning bathroom equipment. Even though the risk is not very high. But it should be cleaned regularly to reduce contamination.
6. Recommend that parents clean children’s toys periodically. Even with the lowest risk But it is good prevention to reduce the chance of infection in children.
7. Use risk information to plan and prioritize cleaning and disinfection of different areas. Focusing on high-risk areas first.
8. Publicize and educate the public about the risks of fomite transmission and appropriate prevention methods. To reduce the spread of germs
9. Use the information to develop policies and measures to prevent the spread of infectious diseases. Emphasis is placed on controlling the risk of fomite transmission in residences and communities.
However, more research is needed to determine the relationship between the detection of viral RNA and the actual risk of infection. Just because the presence of RNA does not always mean that there are still infectious virus particles present.
Future studies will help to better understand the role of fomite transmission in disease spread. and lead to the further development of more effective preventive measures.
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2024-03-17 01:00:41
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