guinea oigs dying out of the blue

Question
i had 4 guinea pigs and 2 of them just died out of the blue they lost a lot of weight and there hair was breaking off and then the next day one of them died and the day after that the other died but the other 2 are just fine and they are older do you no why they did this

Answer
Hello Amber!
Seems I could find four likely causes in order of possibility:
Poisoned (something they ate was wrong)
Had an underlying deises (coinsidence it got them both)
Had some sort of infection that didnt get the others
Or perhaps they had anorexia?