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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Indian+J+Med+Res
2015 ; 142
(1
): 11-22
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Leptospirosis among the self-supporting convicts of Andaman Island during the
1920s--the first report on pulmonary haemorrhage in leptospirosis?
#MMPMID26261162
Vijayachari P
; Sugunan AP
; Singh SS
; Mathur PP
Indian J Med Res
2015[Jul]; 142
(1
): 11-22
PMID26261162
show ga
Several researchers had carried out investigations on the possibility of
existence of Weil's disease in Andaman Islands during early 20 th century. The
first report of a series of confirmed cases of leptospirosis that occurred during
1929 was published in 1931.There were several reports during 1995 to 2009 that
described detailed account of leptospirosis including various clinical syndromes.
The possibility of pulmonary involvement in leptospirosis being a manifestation
historically overlooked rather than newly emerged during the past two decades is
examined in this review in the context of Andaman Islands. Two case series of
leptospirosis, one occurred in 1929 and the other in 1996-1997 were reviewed with
special emphasis on pulmonary involvement and haemorrhagic manifestations. The
similarities and differences in the clinical profile of patients of the two case
series were analysed. The review shows that respiratory system involvement and
pulmonary haemorrhage as evidenced by presence of haemoptysis as a complication
of leptospirosis was occurring during 1920s in Andaman Islands. The incidence of
pulmonary involvement, however, rose from 9.4 per cent during 1929 to 52 per cent
in 1996-1997. The case fatality ratio in patients with pulmonary involvement,
which was 50 per cent during 1929 and 42.9 per cent during 1996-1997, was higher
than that in cases without pulmonary involvement.Fever, conjunctival congestion,
jaundice, vomiting, diarrhoea, hepatomagaly, haemoptysis, haematemesis and
subconjunctival haemorrhage were common in both series. The case series in
Andaman Islands in 1929 was probably the first report of pulmonary haemorrhage as
a manifestation of leptospirosis. The increase in the incidence of pulmonary
involvement in leptospirosis in the recent past is probably due to the increase
in the density and diversity of its animal vectors,the broadening of the range of
circulating serovars and the interactions between the vector and the agent. An
increased virulence of Leptospira through gene acquisition and loss on an
evolutionary time scale and the resulting change in the gene content, gene order
and gene expression cannot be ruled out.