Table 1.

Summary of porcine cases submitted to the Iowa State University Veterinary Diagnostic Laboratory that contained an influenza A virus (IAV) hemagglutinin (HA) sequence genetically similar to MN99 or TX98 contained in the live attenuated influenza vaccine and detected as a single or mixed sequence detection during January 3 to October 11, 2018.

HA	Total cases*	Cases with epidemiologic data†
MN99-like H1	16	11
TX98-like H3	32	17
MN99-like H1 + TX98-like H3	1	0
MN99-like H1 + endemic IAV	4	2
TX98-like H3 + endemic IAV	5	5
Total	58	35

^*Total porcine cases submitted with MN99-like or TX98-like HA sequences.

^†Subset of total porcine cases with MN99-like or TX98-like HA sequences with clinical epidemiologic metadata.