You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is 3 year old sister of a neonate is suffering from peussis, which has been documented by isolation and culture of the organism. Most appropriate statement regarding this clinical situation is - and explain in detail?
<p> Those known to have been in contact with whooping cough may be given prophylactic antibiotic(erythromycin or ampicillin) treatment for 10 days to prevent the infecting bacteria to become established. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:164. <\p>