Deleting elements from list depending on randomly generated number

This code should take a list of viruses like [ATCG, GTAC.....] and a mortalityProb (float between 0 and 1) that represents the chance of a virus to die / get deleted from the list.

The function should return a new list with the remaining viruses. Each of the viruses has an individual chance to die, so with a mortalityProb of say 0.6 there should be around 60% of the viruses remaining.

It should be doable in 2 lines (including def kill(viruses, mortalityProb):) and my line of code using list comprehensions.

def kill(viruses, mortalityProb):
    for i in viruses:
        if random.randint(0, 100) < (mortalityProb * 100):
            del i
    return viruses

This does not quite work though, but I can't get a grasp on why...