What does a positive nasal swab test indicate?

Dec 06, 2022 Source: Cainiu Health

Dr. Xu Gang

Introduction

A positive nasal swab test indicates the presence of a viral infection and requires prompt hospital visit for further precise examination. A nasal swab is a sampling method used to detect viruses or bacteria. By analyzing secretions from the nasal mucosa, it can provide a preliminary assessment of whether there is an infection caused by pathogens such as the novel coronavirus or hand, foot, and mouth disease. If a viral infection is present in the body, the test result will be positive.

A positive nasal swab test indicates the presence of a viral infection, and it is necessary to promptly go to the hospital for further detailed examinations.

A nasal swab is a sampling method used to test for viruses or bacteria by analyzing secretions from the nasal mucosa. It can provide a preliminary assessment of whether there is an infection caused by pathogens such as the novel coronavirus, influenza virus, or hand, foot, and mouth disease. Normally, if the body is healthy, the result will be negative; however, if a viral infection is present, the test result will be positive.

When a nasal swab test returns a positive result, it is important to promptly visit a qualified medical facility for comprehensive diagnostic evaluations, including clinical symptom assessment and chest CT scans. Once a viral infection is confirmed, active treatment tailored to the specific virus should be initiated. In most cases, antiviral therapy can lead to recovery. Even after recovery, individuals should continue monitoring their health indicators, adopt healthy lifestyle habits, and maintain proper protective measures.

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Is antigen testing done with a nasal swab?

In general, antigen testing refers to the detection of the novel coronavirus antigen, which may involve either a nasal swab or a throat swab. When undergoing novel coronavirus antigen testing, it is important that patients refrain from smoking, drinking alcohol, or other activities within 30 minutes prior to the test. While waiting for the test, individuals should avoid talking with others, gathering in crowds, and must wear a mask at all times.

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How can one determine if a child has contracted influenza A?

To determine whether a child has contracted influenza A, typical symptoms, nasal swab tests, serological examinations, and complete blood count (CBC) tests can be used for diagnosis. During flu season, parents should take preventive measures to protect their children, such as vaccination, frequent hand washing, and avoiding crowded places, to prevent the occurrence of influenza A.