20.—(1) If any medical practitioner is of the opinion that any child has an attack of measles, he shall forthwith issue to the parent or guardian of the child a certificate in the form set out in the Fifth Schedule.
(2) Any medical practitioner who issues a certificate of measles infection under this regulation shall within 7 days thereof notify the Commissioner of Public Health in the form set out in the Schedule to the Infectious Diseases (Prescribed Form) Regulations.