Rahul Parikh : Before vaccines , polio , measles , whooping cough , meningitis afflicted children . Parikh : Diseases virtually wiped out , but an anti-vaccine trend threatens to bring them back . Comment: As whooping cough cases mount in California , he says , it 's clear kids need shots .
Rahul Parikh : Before vaccines , polio , measles , whooping cough , meningitis afflicted children . Parikh : Diseases virtually wiped out , but an anti-vaccine trend threatens to bring them back . Doctor who linked vaccine with autism has been discredited , barred from practice , he writes . As whooping cough cases mount in California , he says , it 's clear kids need shots .