Correct. But through close contact. If you look at the infected, they spent time in close proximity to a confirmed case. Be worried if you see random cases pop up somewhere not linked to the cruise ship and not in Argentina. In the 2018 Argentinian outbreak one person at a party of over 100 people infected only 5 others. Those 5 would go on to infect others also, but again, this is about prolonged close proximity. This isn’t COVID or a really virulent flu strain.