Maternal & perinatal outcome of fever in pregnancy in the context of dengue - A retrospective observational study

Background & objectives: Pregnant women with dengue infection may be at increased risk of adverse maternal-foetal outcomes. This study was conducted to assess the maternal and perinatal outcomes in women who presented with fever and diagnosed to have dengue infection during pregnancy. Methods: A retrospective observational study was conducted on pregnant women admitted with fever, in a tertiary referral centre in South India, during January 2015 to December 2018. We compared outcomes of women diagnosed with dengue with that of women without dengue. The study outcomes included pre-term birth, stillbirth, low-birth weight (LBW), maternal mortality and thrombocytopenia. Results: During the study period, there were six maternal deaths following complications from dengue infection. Higher rates of thrombocytopenia (24.7% vs. 14.6%, P=0.02) were noted among those with recent dengue infection. The risk of still birth was 2.67 [95% confidence interval (CI) 1.09, 6.57], LBW [risk ratio (RR) 1.13, 95% CI 0.87, 1.45] and pre-term birth (RR 1.33, 95% CI 0.89, 1.97) among the cases. Interpretation & conclusions: Occurrence of adverse maternal and foetal outcomes was increased in pregnant women with fever diagnosed with dengue infection. Future studies are needed to formulate the optimum monitoring and treatment strategies in pregnant women, where dengue can have additive adverse effects to other obstetric complications.

Comparison of COVID-19 Infection in Children During the First and Second Wave

Concerns have been raised in the media that ‘the third wave’ will severely afect children. Here, an experience of SARSCoV-2 infection in children is reported. Of the 8,626 SARS-CoV-2 RT-PCR tests performed in children (0–17 y) from March 2020 to July 2021 at the authors' institute, 1470 (17%) were positive, [711/4821 (14.7%) during the frst wave (July 2020 to January 2021), and 759/3583 (21.2%) during the second wave (February 2021 to July 2021)]. The children in both waves were similar in presentation (74.1% mildly symptomatic versus 80.2% mildly symptomatic; rest asymptomatic). None of them had COVID pneumonia. Five children died (0.3%), all of a serious primary non-COVID disease. Seventy-three cases of MIS-C during August 2020 to July 2021, with low mortality (2.7%) were also identifed. The similarity in COVID-19 infection in children between the frst and the second waves seems to suggest that the likelihood of the ‘third wave’ hitting children hard is low.

Hepatitis B Seroprotection in Pediatric Nephrotic Syndrome

Objectives: To study the prevalence of Hepatitis B seroprotection in children (>1 y) withnephrotic syndrome vaccinated against Hepatitis B vaccine as per the UniversalImmunization Program schedule (0,6,10,14 wk); to compare the Hepatitis B seroprotectionrates and anti-HBs titers among different phenotypes of nephrotic syndrome; to evaluate theassociation between Hepatitis B seroprotection status and the immunosuppressive agents;and to study the correlation between anti-HBs titres and proteinuria. Methods: Hepatitis Bserology and anti-HBs titers were analyzed in 100 children (age-1-18 y) with different clinicalphenotypes of nephrotic syndrome (cases) and 100 healthy controls. Results: Theproportion of seroprotected children among the cases and controls was 37% (n=37) and 61%(n=61), respectively (P<0.04). The median (IQR) anti- HBs antibodies titers among the caseswas 75 (62.5, 81) mIU/mL and 112 (56, 367) mIU/mL among the controls (P=0.001). Theproportion of seroprotected children among the steroid sensitive nephrotic syndrome, steroid-resistant nephrotic syndrome and controls was 40% (n=28), 30% (n=9) and 61% (n=61),respectively (P<0.01). No differences in the anti-HBs titers between children receivingsteroids versus steroids along with other immunosuppressants were found. Weak negativecorrelation was noted between proteinuria and protective titers (r = -0.155; P=0.039).Conclusion: Children with nephrotic syndrome, in general, and steroid-resistant nephroticsyndrome in particular, show poor seroprotection with Hepatitis B vaccination.

Seroprevalence of syphilis in patients attending a tertiary care hospital in Southern India

To report our experience with two tests, anti-cardiolipin antibody test [venereal disease reasearch laboratory (VDRL) test] and specific treponemal test (Treponema pallidum hemagglutination assay), used for screening antenatal, high risk cases and cases from sexually transmitted infection in a tertiary care hospital from January 2006 till December 2008. Methods: A total of 14639 samples received from various patient groups including antenatal cases, patients attending sexually transmitted disease (STD) clinic, blood donors and HIV positive patients were screened. Results: Among the 14639 samples collected, 103 were positive by VDRL test. Of these 89 cases were confirmed by quantitative VDRL test and Treponema pallidum hemagglutination assay. The cumulative seroprevalence over two years was found to be 0.61% in this study. The syphilis seroprevalence reduced from 0.88% in 2006 to 0.40% in 2008. Among the various sub-populations studied, patients attending the sexually transmitted infection clinic showed a seroprevalence of 2.62%. The seroprevalence decreased significantly from 4.00% in 2006 to 1.39% in 2008. Conclusions: Our study showed a statistically significant declining rate of syphilis in STD clinics as well as the overall seroprevalence. These findings could be interpreted as indicators of improved programmes for prevention and management of STDs.

Fatal Delftia acidovorans infection in an immunocompetent patient with empyema

Delftia acidovorans (earlier known as Comamonas acidovorans) is an aerobic, non-fermentative, Gram negative rod, classified in the Pseudomonas rRNA homology Group III. Reports of isolation of the organism from serious infections like central venous catheter associated bacteremia, corneal ulcers, otitis media exist. The microbiologists can identify this organism based on an orange indole reaction. This reaction demonstrates the organism's ability to produce anthranilic acid from tryptophan on addition of Kovac's reagent; which gives the media its characteristic“pumpkin orange” colour. Here we report the isolation of this organism from the Endotracheal tube aspirate of a 4 year old child. With the increasing use of invasive devices, it has become important to recognize these non fermentative gram negative bacilli as emerging source of infection even in immunocompetent individuals.

A comparative study of blood smear, QBC and antigen detection for diagnosis of malaria.

Rapid diagnosis is prerequisite for effective treatment and reducing mortality and morbidity of malaria. This study was taken up to compare the efficacy of various methods available, i.e., thick and thin smear, quantitative buffy coat (QBC), plasmodium lactate dehydrogenase and aldolase in blood of patient. A total of 411 samples were collected from patients presenting with classic symptoms of malaria. For traditional microscopy; thick and thin smears were prepared and stained with Leishman's stain, taking thick smear as gold standard, thin smear had a sensitivity and specificity of 54.8% and 100%, respectively. QBC and antigen detection was done using commercially available kits; out of 411 samples, QBC and Malariagen were positive in 66 and 62 cases, with a sensitivity of 78% and 75%, respectively. Leishman's thick smear, although cost effective, is difficult to interpret for inexperienced microscopists; so if facilities are available, QBC should be used for routine diagnosis. In places where facilities are not available, rapid, simple and easy to interpret antigen detection test can be used despite low sensitivity.