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Ohio Influenza Surveillance

The Ohio Department of Health tracks seasonal influenza activity on a weekly basis throughout the year. ODH monitors circulating flu viruses and other related data sources and provides weekly summaries of influenza activity from October (Week 40) through May (Week 20). The first week of the new calendar year is indicated by "Week 1."

Weekly Flu Activity Reports

2013			2012		2011
Week 1	Week 14	Week 1	Week 14	Week 44	Week 40
Week 2	Week 15	Week 2	Week 15	Week 45	Week 41
Week 3	Week 16	Week 3	Week 16	Week 46	Week 42
Week 4	Week 17	Week 4	Week 17	Week 47	Week 43
Week 5	Week 18	Week 5	Week 18	Week 48	Week 44
Week 6	Week 19	Week 6	Week 19	Week 49	Week 45
Week 7		Week 7	Week 20	Week 50	Week 46
Week 8		Week 8	Week 21	Week 51	Week 47
Week 9		Week 9	Week 22	Week 52	Week 48
Week 10		Week 10	Week 40		Week 49
Week 11		Week 11	Week 41		Week 50
Week 12		Week 12	Week 42		Week 51
Week 13		Week 13	Week 43		Week 52

Final weekly report from 2011-12 influenza season

Final weekly report from 2010-11 influenza season

Last updated 5/3/2013