Is isolation required for a positive influenza A antigen test?

Mar 10, 2025 Source: Cainiu Health

Dr. Ren Yi

Introduction

Under normal circumstances, "Jia Liu" refers to Influenza A. A positive antigen test for Influenza A usually requires isolation. Influenza A is an acute respiratory infectious disease caused by the Influenza A virus. It is highly contagious and mainly spreads through droplets, but can also be transmitted indirectly through contact with contaminated hands or daily articles. In daily life, it is important to maintain personal hygiene and wash hands frequently.

Generally speaking, "swine flu" refers to influenza A, and a positive result for influenza A antigen usually requires isolation. The detailed explanation is as follows:

Influenza A is an acute respiratory infectious disease caused by the influenza A virus. It is highly contagious and mainly spreads through droplets; it can also be transmitted indirectly through contact with contaminated hands, daily objects, etc. When the influenza A antigen test is positive, it indicates that the body has been infected with the influenza A virus. At this point, the patient becomes a source of infection and can easily transmit the virus to others, especially elderly individuals, children, pregnant women, and people with chronic diseases or weakened immune systems, potentially causing severe complications. Therefore, to prevent further spread of the virus, protect susceptible populations, and reduce the risk of an outbreak, individuals testing positive for the influenza A antigen should generally be isolated. It is recommended that patients stay in a separate room, ensure good indoor air circulation, and avoid close contact with others.

In daily life, attention should be paid to personal hygiene, frequent handwashing with soap or hand sanitizer, and carefully following the seven-step handwashing technique, especially after touching public items, before meals, and after using the toilet.

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Is dizziness after influenza A a sign of recovery?

Under normal circumstances, "Jia Liu" refers to Influenza A H1N1. Whether dizziness following Influenza A H1N1 indicates recovery depends on the specific circumstances. If dizziness is the only symptom present without other accompanying symptoms, it usually suggests the condition is improving. However, if dizziness is accompanied by other systemic symptoms such as headache, tinnitus, or fatigue, it may not indicate improvement. If any discomfort persists, prompt medical attention is recommended.

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What does a high level of amyloid A protein indicate?

Infection is a common cause of elevated marker levels. During bacterial infections such as pneumonia and pyelonephritis, serum amyloid A protein rapidly increases within hours, and the extent of elevation often correlates with the severity of the infection. Viral infections, such as influenza and coronavirus infection, can also lead to increased levels, although the rise is typically less pronounced than in bacterial infections, making it a useful adjunct for differentiating types of infection.