Still think otherwise? See this ghsindex.org
1. Exportation of cases (prior to travel restrictions)
2. Number of new cases per day meeting case definition etc.
1. The Burden of Influenza: a Complex Problem link.springer.com/article/10.100…
3. Estimating disease burden of a potential A(H7N9) pandemic influenza outbreak in the United States bmcpublichealth.biomedcentral.com/articles/10.11…