The 1918 influenza pneumonia in the United States and among U.S. soldiers in Europe, but focused on the city of Philadelphia.
We agree with Dr. Wright et al. about the importance of secondary bacterial pneumonia in the novel swine-origin Influenza A infection and especially about Staphylococcus aureus secondary infection. Community-associated Staphylococcus aureus (CA-SA) can produce a severe necrotizing pneumonia that typically has been associated with seasonal influenza virus infection. The Centers for Disease Control and Prevention (CDC) has issued warnings of fatal infections in children with seasonal influenza co-infected with MRSA following reports of severe cases of pneumonia.