All of the following statements regarding Clostridium tetani are true, except
The resistance of tetanus spores to heat appears to be subject to strain differences. Most are killed by boiling for 10-15 mins but some resist boiling for up to 3 hrs. Autoclaving at 121degC for 20 mins ensures complete removal of spores. Reference: Textbook of Microbiology; Anathanarayan and paniker's; 10th edition; Page no: 265
Spores are resistant to heat
Primary immunization consists of three doses
Incubation period is 6-10 days
Person to person transmission does not occur
Bacteriology