Mae feirysau anadlol yn ffynnu yn y gaeaf, gyda phlant ifanc iawn, pobl â chyflyrau iechyd a’r henoed yn eithriadol o agored i niwed. Wrth i’r tywydd oeri, mae’n haws i feirysau fel y ffliw ledaenu. Does neb eisiau bod yn sâl dros y Nadolig a’r flwyddyn newydd, felly mae’n werth cael eich brechlyn.
Respiratory viruses thrive in the winter, with the very young, those with a health condition and the very old are particularly vulnerable. As the weather gets colder, viruses like flu are more easily spread. No-one wants to be ill over Christmas and New Year so it really is worth getting your vaccine.