Mycobacterium avium subspecies paratuberculosis – an important food borne pathogen of high public health significance with special reference to India: an update
2017
Kundan Kumar Chaubey | Shoor Vir Singh | Saurabh Gupta | Manju Singh | Jagdip Singh Sohal | Naveen Kumar | Manoj Kumar Singh | Ashok Kumar Bhatia | Kuldeep Dhama
This review underlines the public health significance of ‘Indian Bison Type’ of Mycobacterium avium subspecies paratuberculosis (MAP) and also its potential as ‘zoonotic infection’. In the absence of control programs, bio-load of MAP is increasing and if we take total population of animals (500 million plus) and human beings (1.23 billion plus) into account, the number of infected animals and human beings will run into millions in India. Our research on screening of over 26,000 domestic livestock for MAP infection using 4 different diagnostic tests (microscopy, culture, ELISA and PCR), during last 31 years has shown that the average bio-load of MAP in the livestock population of India is very high (cattle 43%, buffaloes 36%, goats 23% and sheep 41%). ‘Mass screening’ of 28,291 human samples between 2008–2016 revealed also high bio-load of MAP. It has been proved that MAP is not in-activated during pasteurization and therefore live bacilli are continuously reaching human population by consumption of even pasteurized milk and other milk products. Live bacilli have also been recovered from meat products and the environment thus illustrating the potential of MAP as pathogen of public health concern. However, at present, there is inadequate scientific evidence to confirm a conclusive link between MAP infection and Johne's disease in ruminants and some cases of Crohn's disease in human beings.
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