Human Swine Influenza A(H1N2)v Case
A 2-year-old boy in China was diagnosed with a rare human swine influenza A(H1N2)v infection after presenting with respiratory symptoms. Genomic analysis confirmed the virus was a reassortant strain, highlighting the importance of advanced sequencing in zoonotic disease surveillance.
Why it matters
This case underscores the ongoing risk of zoonotic disease transmission and the critical role of genomic surveillance in identifying novel influenza strains that could pose pandemic threats.
CHINA’S first human swine influenza A(H1N2)v case highlights zoonotic exposure and the value of influenza surveillance .
The infection was identified in a previously healthy boy aged 2 years and 10 months who developed recurrent fever and paroxysmal cough. His condition progressed despite several outpatient visits and treatments, leading to hospitalization with bronchopneumonia and infectious fever.
Testing on admission detected influenza A, while sputum culture suggested concurrent Haemophilus influenzae infection. Chest CT showed increased and blurred pulmonary markings. The child received cefoperazone–sulbactam, oseltamivir , ambroxol, and nebulized budesonide. His fever resolved, respiratory symptoms improved, and he was discharged after a complete recovery.
Initial reverse transcription polymerase chain reaction testing of archived and follow-up specimens returned negative results. However, next-generation sequencing recovered the complete viral genome from the patient’s oropharyngeal swab.
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