How to deal with test samples containing new coronavirus

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The treatment process of medical waste in medical institutions mainly includes: classified collection, autoclave treatment, hospital transfer, temporary storage, and transfer for centralized disposal. To determine whether a patient suspected of new coronary pneumonia is infected with the new coronavirus from the etiology, and to evaluate the patient's condition, it is necessary to collect samples with nucleic acid detection material virus transport medium for testing. The tested samples include nasopharyngeal swabs, sputum, blood, urine, etc. Desheng can provide various detection materials forvirus transport medium, nasopharyngeal swabs, and disposable sampling tubes.

After completing the test, how do the inspectors handle these virus-containing samples?

Desheng Virus Transport Msdia and disposable sampling tube

1. Autoclave the specimen

After the outbreak of the new crown pneumonia epidemic, Beijing You'an Hospital was designated as a designated hospital to treat patients with confirmed and suspected cases. Researcher Zhao Yan, director of the clinical laboratory of the hospital, said in an interview with a reporter from the Science and Technology Daily: "After the inspectors have completed the sample testing, the medical waste generated is mainly the specimens after the test and the experimental waste generated during the test (such as solid waste samples). Containers, pipette tips, etc.), as well as the waste liquid generated during the experiment of the inspection equipment. The medical waste generated is classified as infectious medical waste according to the "Medical Waste Classification Catalog."

In accordance with the "Medical Waste Management Regulations" and related regulations, for specimens, consumables, laboratory waste liquids and other high-hazard wastes that may contain pathogens in medical waste, laboratory testers need to perform pressure steam sterilization or chemical disinfection in the laboratory . The specimens after the test and the waste consumables in contact with the specimens during the test shall be sterilized by pressure steam. As for the infectious waste liquid, it needs to be soaked in a disinfectant with an effective chlorine content of 0.55%, and after the sterilization effect is verified, it is discharged into the laboratory water treatment system. "It should be noted that pressure steam sterilization is not suitable for all medical wastes. Pressure steam sterilization is mainly suitable for the treatment of infectious and damaging wastes, but not for pathological wastes, chemical wastes and pharmaceutical wastes. "Zhao Yan said.

2. Make registration and centrally store

The Clinical Laboratory Center of the Department of Health of Henan Province and the Laboratory Department of the First Affiliated Hospital of Zhengzhou University issued the "New Coronavirus Specimen Laboratory Testing and Biosafety Processing Procedures" (hereinafter referred to as "processing procedures"), which mentioned that special packaging bags for medical waste, There should be warning signs on the outer surface of the sharps box. Before the medical waste is contained, careful inspection should be carried out to ensure that it is free from damage and leakage.

The medical waste collection bucket should be pedal type with cover. Each packaging bag and sharps box should be attached or affixed with a Chinese label. The content of the label includes: medical waste producing unit, producing department, production date, category, and the special instructions should be marked with "new coronavirus infection pneumonia".

In addition, inspectors must strictly register the medical waste after pressure steam sterilization. It is reported that the contents of the registration include the source, type, weight or quantity of the medical waste, the time of handover, the final destination and the signature of the person in charge, with special indication of "new coronavirus-infected pneumonia" or "new crown". The registration information needs to be kept for 3 years. Zhao Yan told the reporter of Science and Technology Daily that the temporary storage of medical waste in medical institutions does not exceed 24 hours, and then it is transferred by special medical waste transportation vehicles to the final medical waste disposal unit for centralized disposal.

3. Prevent virus leakage and ensure biological safety

The standard handling of virus samples involves biological safety. In history, there have been incidents in which people were infected due to improper laboratory management, resulting in a virus leak. According to my country's relevant regulations, the new crown virus belongs to the definition of highly pathogenic pathogenic microorganisms. Article 33 of the "Regulations" clearly states that the establishment of laboratories engaged in experimental activities related to highly pathogenic pathogenic microorganisms should establish a sound security system and adopt security measures to prevent the theft and theft of highly pathogenic pathogenic microorganisms. Being robbed, lost, or leaked to ensure the safety of the laboratory and its pathogenic microorganisms.

If the pathogenic microorganism laboratory leaks highly pathogenic microorganisms, the laboratory staff shall immediately take control measures to prevent the spread of highly pathogenic microorganisms, and report to the institution or personnel responsible for laboratory infection control.