<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?hii ni homa ya nguruwe iliyojulikana kwa jina la h1n1 ambayo ilianzia huko mexico mwaka 2009 na kuenea ulimwenguni kote.  <response>: the virus, known as g4, is a descendant of the h1n1 strain that originated in mexico and caused a pandemic in 2009. 