It is very difficult to obtain the status of incidence of leptospirosis in India . There are 29 states & 7 union territories . Kerala is the only state , which has provided data from every district . Andaman & Nicobar Islands , Gujarat , Maharashtra , Tamilnadu & Karnataka provide data from limited districts . Most of the data have been from published studies from individual researchers in their cities . In some states such as Madhya Pradesh , Chattisgarh , Jharkhand , Bihar , Rajasthan & most of states in N.E. India , except Assam , no published data on human leptospirosis are available . The total number of cases may range from 8000 to 10,000 cases / year . It is difficult to extrapolate the incidence from these data . The probable reason is lack of awareness of the disease & non availability of simple diagnostic tests .

The data given below provides the status of Leptospirosis in India .

some case studies that also refer to overall situation

S. Roy; D. Biswas; P. Vijayachari; A.P. Sugunan; S.C. Sehgal A clone of Leptospira interroganssensu stricto is the major cause of leptospirosis in the archipelago of Andaman and Nicobar Islands, India Wiley Blackwell (Blackwell Publishing) Letters in Applied Microbiology Year:2005 Month: Day: Volume:41 Issue:2 First page:179 Last page:185

Abani Bhusan Jena; Kailash C. Mohanty; N. Devadasan An outbreak of leptospirosis in Orissa, India: the importance of surveillance Wiley Blackwell (Blackwell Publishing) Tropical Medicine & International Health Year:2004 Month: Day: Volume:9 Issue:9 First page:1016 Last page:1021

M. Kuriakose; C.K. Eapen; R. Paul Leptospirosis in Kolenchery, Kerala, India: Epidemiology, prevalent local serogroups and servoars and a new serovar Springer (Kluwer Academic Publishers) European Journal of Epidemiology Year:1997 Month:09 Day: Volume:13 Issue:6 First page:691 Last page:697

SA Khan; P Dutta; J Borah; P Chowdhury; R Topno; M Baishya; J Mahanta Leptospirosis presenting as acute encephalitis syndrome (AES) in Assam, India Elsevier Asian Pacific Journal of Tropical Disease Year:2012 Month: Day: Volume:2 Issue:2

B. Shivaraj; R. Ts; B.Y. Anithraj; R. Bayari A study on prophylactic doxycycline to reduce the incidence of leptospirosis among paddy field farmers in a coastal district of India Elsevier International Journal of Infectious Diseases Year:2012 Month: Day: Volume:16 Issue:supp-S1

K. Mendhekar P267 Epidemiological profile of leptospirosis cases in Calicut, Kerala, India, 2008 Elsevier International Journal of Antimicrobial Agents Year:2009 Month: Day: Volume:34 Issue:supp-S2

Manisha DebMandal; Shyamapada Mandal; Nishith Kumar Pal Serologic evidence of human leptospirosis in and around Kolkata, India: A clinico–epidemiological study Elsevier Asian Pacific Journal of Tropical Medicine Year:2011 Month: Day: Volume:4 Issue:12 First page:1001 Last page:1006

Basker, Parasuraman; Kannan, Pichai; Kolandaswamy, Karumana Gounder Study on the Prevalence of Leptospirosis among Fever Cases Reported from Private Clinics in the Urban areas of Villupuram District, Tamil Nadu, India Elsevier Osong Public Health and Research Perspectives Year:2014 Month:02 Day: Volume:5 Issue:1 First page:54 Last page:67

Loganathan, N.; Shivakumar, S. Epidemiological Risk Factors of Urban Leptospirosis in North Chennai (Tamil Nadu) - A South India Study Elsevier International Journal of Infectious Diseases Year:2008 Month:12 Day: Volume:12 Issue: First page:e447 Last page:e448

Prabhakaran, S. G.; Shanmughapriya, S.; Dhanapaul, S.; James, A.; Natarajaseenivasan, K. Risk factors associated with rural and urban epidemics of leptospirosis in Tiruchirappalli District of Tamilnadu, India Springer-Verlag Journal of Public Health (Springer) Year:2014 Month:08 Day:21 Volume:22 Issue:4 First page:323 Last page:333

Vinetz, J M Detection of leptospirosis in India BMJ Publishing Group Archives of Disease in Childhood Year:2003 Month:12 Day:01 Volume:88 Issue:12 First page:1033 Last page:1033

Karande, S. Concurrent Outbreak of Leptospirosis and Dengue in Mumbai, India, 2002 Oxford University Press Journal of Tropical Pediatrics Year:2005 Month:04 Day:14 Volume:51 Issue:3 First page:174 Last page:181

Patil, D; Dahake, R; Roy, S; Mukherjee, S; Chowdhary, A; Deshmukh, R Prevalence of leptospirosis among dogs and rodents and their possible role in human leptospirosis from Mumbai, India Medknow Publications Indian Journal of Medical Microbiology Year:2014 Month: Day: Volume:32 Issue:1

Potdar, G.A.; Pol, S.; Bharadwaj, R.S. Serosurveillance of leptospirosis among paddy field workers with febrile illness from Western Maharashtra, India Elsevier International Journal of Infectious Diseases Year:2016 Month:04 Day: Volume:4

Patil, Deepak Y.; Dahake, Ritwik V.; Chowdhary, Abhay S.; Deshmukh, Ranjana A. Clinico-epidemiological observations of human leptospirosis from Mumbai, India Elsevier Journal of Infection and Public Health Year:2016 Month:6

Chaudhry, Rama; Saigal, Karnika; Bahadur, Tej; Kant, Kamla; Chourasia, Bishwanath; Gupta, Nitin Varied presentations of leptospirosis: experience from a tertiary care hospital in north India Sage Publications Tropical Doctor Year:2017 Month:04 Day: Volume:47 Issue:2 First page:128 Last page:132