In 2009 schools closed, social distancing was enacted, US Gov declared a national health emergency within a few weeks and the CDC released millions of antivirals and respiratory equipment. No we didn't panic as much but it wasn't as deadly. We have no antivirals that work on this virus, the response it to try and get ahead as much as possible with the only thing we can do make people aware and use social distancing, Hygiene methods of washing hands and covering sneezing and coughing.
https://www.cdc.gov/h1n1flu/cdcresponse.htm
https://www.cdc.gov/h1n1flu/cdcresponse.htm