A/PR/8/34 (H1N1)

A/PR/8/34 (H1N1) is a strain of the influenza virus, specifically the H1N1 subtype, first isolated in 1934. It is significant in virology as it contributed to research on flu viruses and pandemic preparedness. The "A" indicates it belongs to the influenza A group, "PR" refers to its origin in a pig (from Puerto Rico), and "8/34" denotes the eighth isolate from that year. This strain is often associated with studies on how influenza can mutate and spread, providing insights for vaccine development and understanding viral infections in humans and animals.