<prompt> All of the following statement about plague are wrong except -Domestic rat is main reservoirBubonic is the most common varietyThe causative bacillus can survive up to 10 years in the soil of rodent burrowsIncubation period for pneumonic plaque is one to three dayseks  <response>: -plaque is primarily a zoonoses caused by Yersenia pestis. The causative bacillus can survive and multiply in the soil of the rodent burrow. - the reservoir of plaque is wild rodents, filed mice gerbils and skunks. - in India, the wild rodent Tatera indica is the main reservoir. - Bubonic plague is the most common variety in man. - Incubation period for pneumonic plaque is one to three days Reference : Parks textbook of preventive and social medicine, 23rd edition, pg no:293,295 p 