Pharmacokinetics，Safety and Efficacy of ZSP1273 in Children 2-17 Years Old With Influenza A

Inclusion Criteria

• •1. Subjects and their guardians who are able to understand the study and comply with all study procedures, and willing to provide written informed consent/assent prior to the predose examinations appropriately.
• •2. Male or female subjects aged ≥ 2 to ≤17 years at the time of signing the informed consent form.
• •3. Subjects with a diagnosis of influenza virus infection confirmed by all of the following:
• •* Positive rapid antigen test (RAT) for influenza with nasal or throat swabs;
• •* The time interval between the onset of symptoms and enrollment is 72 hours or less;
• •* Fever ≥ 38ºC (axillary temperature); and at least one following respiratory symptoms associated with influenza virus infection is present