Michael Green 
Blood Line [EPUB ebook] 

A compelling, suspense-filled read with surprise twist after surprise twist – what if your family was the last left alive?When a pandemic strikes, members of the Chatfield family possess a crucial advantage. Guessing that their relatives on the other side of the world might also have escaped the devastating virus, and knowing that for their ultimate survival they must increase their gene pool, two members of the family’s New Zealand branch embark on a perilous journey in a small yacht. The community they find on the other side of the world is a very different one, based on the rule of fear. Not only does it look impossible to take anyone back to New Zealand, but it may also be impossible for them to escape themselves.