All true.
LEARN FROM RECENT HISTORY:
https://en.wikipedia.org/wiki/Influenza_A_virus_subtype_H1N1#Swine_influenza
In April 2009, an outbreak of influenza-like illness (ILI) occurred in Mexico and then in the United States; the CDC reported seven cases of novel A/H1N1 influenza and promptly shared the genetic sequences on the GISAID database. With similar timely sharing of data for Mexican isolates, by 24 April it became clear that the outbreak of ILI in Mexico and the confirmed cases of novel influenza A in the southwest US were related and WHO issued a health advisory on the outbreak of “influenza-like illness in the United States and Mexico”.
The disease then spread very rapidly, with the number of confirmed cases rising to 2,099 by 7 May, despite aggressive measures taken by the Mexican government to curb the spread of the disease.