Title: Seroprevalence of Leptospirosis at a Tertiary Care Hospital

Authors: Mohammed Muhsin.P.V, Dr.S.Manjusree, Ashraf Perilacode

 DOI:  https://dx.doi.org/10.18535/jmscr/v5i1.128

Abstract

Background & Objectives: Leptospirosis is a zoonotic disease worldwide that has emerged as an important cause of morbidity and mortality among impoverished populations. It is a global condition that is found across the world. Rates of leptospirosis are highest in tropical and sub-tropical locations, particularly in rural areas. This study was done to determine the prevalence of leptospirosis infection at Government Medical College, Thiruvananthapuram and to determine the month to month variation. The seroprevalence data are useful to assist preventive strategies. Study was conducted in Government Medical College, Trivandrum during the period March to August of 2015.

Method: 252 Sera from patients were subjected to IgM Leptospira ELISA test. A total of 13 seropositive  samples were  analyzed by PCR.11 positive samples having higher OD values in IgM ELISA were sent to REGIONAL MEDICAL RESEARCH CENTRE  for performing   Microscopic Agglutination Test ( MAT).

Results: 24 among 252 samples were found to be positive serologically by IgM ELISA. Maximum of 9 leptospirosis cases were found during May. PCR was positive for 3 samples. 7 samples gave positive results in MAT and 2 of them were found to be serovar Lai.

Interpretation & Conclusions: The overall seropositivity of leptospirosis was 9.52% with maximum cases during the month of May.  Since leptospirosis is a treatable disease, correct and rapid diagnosis may help in effective management of patients.

Keywords: Leptospirosis, Seroprevalence, MAT, IgM ELISA, PCR.

References

1.      Waitkins SA. 1987. Leptospirosis. In: Manson’s Tropical Diseases, 19th edition. Eds. Manson-Bhor PEC, Bell DR. London, Bailliére Tindall. p 657 – 665.

2.      Tangkanakul W, Tharmaphornpil P, Plikaytis BD, Bragg S, Poonsuksombat  D, Choomkasien P, Kingnate D, Ashford DA. 2000. Risk factors associated with leptosp-irosis in Northeastern Thailand, 1998. Am J Trop Med Hyg, 63  (3, 4): 204 – 208.

3.      Smythe LD, Field HE, Barnett LJ, Smith CS, Dohnt MF, Symonds ML,  Moore MR, Rolfe PF. 2002. Leptospiral antibodies in flying foxes in Australia. J Wildl Dis, 38 (1): 182 – 6.

4.      Faine S. 1982. Guidelines for control of leptospirosis. Geneva, World Health  Organization.

5.      Levett PN. 2001. Leptospirosis. Clin Microbiol Rev, 14: 296 – 326.

1.      6.. Singh SS, Vijayachari P, Sinha A, Sugunan AP, Rashid MA, Sehgal SC. 1999. Clinico-epidemiological study of hospitalized cases severe  leptospirosis. Indian J Med Res, 109: 94 – 99.

6.      Silvia RRV, Brauner JS. 2002. Leptospirosis as a cause of acute respiratory  failure: clinical features and outcome in 35 critical care patients. Brazilian J  Infect Dis, 6 (3): 135 – 139.

7.      Ramachandran S, Perera MVF. 1977. Cardiac and pulmonary involvement in leptospirosis. Trans Royal Soc Trop Med Hyg, 71 (1): 56 – 59.

8.      Muthusethupathy MA, Sivakumar S, Vijayakumar R, Jayakumar M. 1994. Renal involvement in leptospirosis – our experience in Madras city. J Post  Graduate Med (India), 40 (3): 127 – 131.

9.      Rathinamsivakumar, Ratnam S, Sureshbabu L, Natarajaseenivasan K. 1996. Leptospiral antibodies in patients with recurrent ophthalmic involvement. Indian J Med Res, 103: 66 – 68.

10.  Oh HB, Chang WH, Cho MK, Seong WK, Park KS. 1991. Identification of new serovars yeonchon and hongchon belonging to Leptospira interrogans of the Icterohaemorrhagiae serogroup. J. Korean Soc Microbiol 26: 253 – 262.

11.  Trefejo RT, Rigau-Perez JG, Ashford DA et al. 1998. Epidemic leptospirosis  associated with pulmonary haemorrhage – Nicaragua, 19956. J Infect Dis  178: 1457 – 1463.

12.  Sehgal SC, Sugunan AP, Vijayachari P. 2001. Outbreak of leptospirosis after cyclone in Orissa. National Med J India, 15 (1): 22 – 23.

13.  Vijayachari P, Sehgal SC, Goris MGA, Terpstra WJ, Hartskeerl RA. 2003. Leptospira interrogans serovar Valbuzzi: a case of severe pulmonary  haemorrhages in Andaman Islands. J Med Microbiol 52: 913 – 918.

14.  Sehgal SC, Sugunan AP, Vijayachari P. 2003. Leptospirosis: disease burden  estimation and surveillance networking in India. South East Asian J Trop  Med Pub Hlth, 34, (suppl 2): 170-177

15.  G. Vimala, A. Mary Josephine Rani, and V. Raja Gopal, Leptospirosis  in Vellore: A Clinical and Serological Study. International Journal of  Microbiology Volume 2014 (2014).

16.  Eddy R. Segura,a Christian A. Ganoza,a Kalina Campos, Jessica N. Ricaldi, Sonia Torres, Hermann Silva et al, , Clinical Spectrum of Pulmonary Involvement in Leptospirosis in a Region of Endemicity, with Quantification of Leptospiral Burden. Clinical Infectious Diseases. Volume 40, Issue 3Pp. 343-351

17.  Panaphut T, Domrongkitchaiporn S, Thinkamrop B, Prognostic factors of death iin leptospirosis: a propective cohort study in Khonkaen, Thailand.Int.J.Infect.Dis. 2002 6(1) : 52-59.

Corresponding Author

Dr S.Manjusree

Associate Professor, Microbiology

Govt Medical College, Thiruvananthapuram