it doesn't really matter.
https://www.politifact.com/factchecks/2020/mar/04/facebook-posts/president-obama-declared-h1n1-public-health-emerge/
Obama acted before pandemic declared
Obama’s acting director of health and human services declared H1N1 a public health emergency on April 26, 2009.
That was when only 20 cases of H1N1 — and no deaths — around the country had been confirmed.