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et al., 2012 ) and was present in 54% of 24 children requiring ICU admission
in Brazil ( Lanca et al., 2012 ). Many series are limited by incomplete systematic
investigation for bacterial sepsis and other potential co-morbidities. Although
one series described negative pre-antibiotic blood cultures among P. vivax -
infected patients with shock ( Lanca et al., 2012 ), 38% of these had an identi-
fied additional infectious co-morbidity potentially contributing to shock.
8.2.6. Other manifestations
Jaundice is common in severe vivax malaria ( Alexandre et al., 2010 ; Kochar
et al., 2010 ; Lanca et al., 2012 ; Jat et al., 2012 ), mostly in association with
other severe manifestations ( Lanca et al., 2012 ). In Brazilian children, jaun-
dice did not predict need for ICU admission ( Lanca et al., 2012 ). Hypo-
glycaemia (blood glucose <2.2 mmol/l or <40 mg/dl) ( World Health
Organization, 2010 ) was found in 12.5% of children with vivax malaria
requiring admission to intensive care unit in Brazil ( Lanca et al., 2012 ). Less-
common manifestations reported in association with P. vivax also include
haemoglobinuria in the absence of G6PD deficiency ( Kochar et al., 2010 ),
acalculous cholecystitis ( Curley et al., 2011 ), gangrene ( Raghunandan et al.,
2012 ) and fatal pulmonary haemorrhage and haematemesis ( Jat et al., 2012 ).
8.3. Vivax Malaria in Pregnancy
8.3.1. Effects on mother
In contrast to P. falciparum , P. vivax is not commonly associated with severe
malaria in pregnant women ( Nosten et al., 1999 ; Poespoprodjo et al., 2008 ;
Rijken et al., 2012a ; McGready et al., 2012a , 2012b ) and in a large series
from the Thai-Burma border, no maternal deaths were associated with
vivax malaria over a 25-year period ( McGready et al., 2012b ). Despite
its rarity in large series from Thailand and Indonesia ( Nosten et al., 1999 ;
Poespoprodjo et al., 2008 ; McGready et al., 2012a ), severe maternal malaria,
including severe anaemia, has been reported in association with P. vivax
infection in small series from India ( Kochar et al., 2005 ; Nayak et al., 2009 )
with poor pregnancy outcomes but again with no maternal deaths. In all
endemic regions, vivax-associated maternal anaemia is common, being
approximately twice as likely in pregnant women infected with P. vivax
than without ( Nosten et al., 1999 ; Poespoprodjo et al., 2008 ).
8.3.2. Effects on foetus and neonate
Plasmodium vivax infection in pregnancy causes a reduction in birth weight
(median 108 g) ( Nosten et al., 1999 ; Poespoprodjo et al., 2008 ; Rijken
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