The reason why whooping cough is still around is that a lot of people don't realise that they are only immune for 10 years. 80% of babies who get whooping cough contract it from their mother. It would be great if you could protect your daughter by just keeping her away from anyone who is sick but in reality it's not the case. I am not trying to convince you either way as I agree that you need to make an informed decision, please just make sure that you obtain your information from true evidenced based articles - not scaremonger websites.