The following statements about meningococcal meningitis are true except -
The meningococcal organism is found in the nasopharynx of cases and carriers. Clinical cases present only a negligible source of infection. Reference : Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 175
The source of in fection is mainly clinical cases
The disease is more common in dry and cold month of the year
Chemoprophylaxis of close contacts of cases is recommended
The vacciens is not effective in children below 2 year of age
Communicable diseases