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 Which of the following was a pa of expanded programme of immunization ? and explain in detail?
Ans. is 'c' i.e., Peussis In may 1974, the WHO officially launched a global immunization programme, known as expanded programme of immunization (EPI) to protect all children of the word against six vaccine-preventable diseases by the year 2000.