Can the flu be detected on the same day of fever onset?
Feb 24, 2025
Source: Cainiu Health
Dr. Ren Yi
Introduction
Influenza A usually refers to Type A influenza. In general, Type A influenza can be detected on the day fever symptoms appear. It is recommended to seek timely medical attention and follow the guidance of a physician for treatment. If diagnosed with Type A influenza, patients may take antiviral oral solutions, Lianhua Qingwen capsules, Oseltamivir Phosphate capsules, or other medications as directed by a doctor to aid in recovery.
Influenza A usually refers to Type A influenza. Generally, Type A influenza can be detected on the day fever starts, and timely medical consultation is recommended for treatment under a doctor's guidance. Detailed analysis is as follows:
Type A influenza is caused by infection with the influenza A virus and commonly presents symptoms such as fever, cough, and fatigue. The typical time for testing for the influenza A virus is 2 to 4 days after the onset of illness, as the virus replicates extensively in the body during this period, resulting in a high viral load and higher accuracy of detection. If a patient is tested on the day of fever onset and the viral load in the body has reached a detectable level, it is possible to identify the influenza A virus. At this time, the real-time fluorescent RT-PCR detection method can be used, which is highly sensitive and capable of rapidly and accurately detecting viral nucleic acid.
If diagnosed with Type A influenza, patients may follow medical advice to use antiviral oral liquid, Lianhua Qingwen capsules, oseltamivir phosphate capsules, and other medications for treatment, which can aid in recovery.
