Revisiting Global Health Security Measures in COVID 19 Pandemic

As the world has become a global village with increasing socio-economic interdependence, health, security and stability issues are imposing interrelated global impacts. Thus, activities supporting epidemic and pandemic preparedness are needed to minimize vulnerability to acute public health events. Coordination mechanisms must be pre-established for diagnostics, therapeutics and research as emergencies often lead to competition and shortage of resources. This paper attempts to discuss the available global health security measures at the time of COVID 19 pandemic

Pediatric musculoskeletal ultrasound

Musculoskeletal ultrasound (US) is rapidly becoming a very friendly and useful modality in the evaluation of musculoskeletal complaints. Whether it can compete with computed tomography/magnetic resonance imaging as a gold standard is entirely a different discussion; what needs attention is that, especially when dealing with pediatric population, how it transcends the fine line of disadvantages over other cross-sectional modalities to become a faithful, well-serving, bedside, outpatient, inpatient, point-of-care tool. Childhood trauma, inflammatory pathologies, congenital malformations, and infective foci are more amenable to US today, and our growing awareness about the applications of this modality is creating the possibilities of early detection, confirmation, and without delay in treatment as a one-stop shop

India’s Testing Strategy for COVID-19 – An Epidemiological Perspective

India has responded to the current pandemic of coronavirus disease 2019 (COVID-19) in terms of systems development, capacity building, upgrading infrastructure along with highest political support, including implementation of testing for COVID-19 as per Indian Council of Medical Research (ICMR) guidelines. However, the strategy, which was earlier restricted due to several reasons has now been gradually scaled up and modified as per requirements of the country. The paper attempts to evaluate the testing strategies in place with an epidemiological perspective. Newer testing modalities of feces, saliva and radiological testing hold promising evidence and need validation for effective utilization. India must deploy the tests in hand rationally for the control of pandemic. Testing for COVID-19 must address resurgence of local outbreaks currently, provide immunity certificates and intelligence on epidemic evolution in long-term

An Outbreak of Ralstonia mannitolilytica Septicaemia at a Tertiary Care Hospital: An Observational Cross-sectional Study

Introduction: Ralstonia spp. is an emerging non fermenting Gram negative bacillus implicated in cases of bloodstream infections in immunocompromised individuals. It is commonly found as an environmental contaminant in hospital settings. Several sporadic outbreaks have been reported from different parts of the world due to Ralstonia spp. This study reports a similar outbreak at a tertiary care hospital in Northern India. Aim: To determine the source of Ralstonia septicaemia in affected patients at a tertiary care centre. Materials and Methods: The present observational cross-sectional study was conducted at the Department of Microbiology, Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS), Lucknow, Uttar Pradesh, India from February 2020 until the end of March 2020 (two months). A total of 2,650 blood cultures were received during the study period; of these, 53 (2%) patients were found to have Ralstonia mannitolilytica infection over a two month period. All patients from various wards whose blood cultures showed growth of Ralstonia species were included in this study. The organism was identified using both biochemical tests and Matrix-Assisted Laser Desorption Ionisation-Time of Flight Mass Spectrometry (MALDI-TOF MS). Antibiotic sensitivity testing was conducted using the Kirby-Bauer disk diffusion assay. Environmental surveillance was conducted to detect the source of origin. Patients’ age, sex, duration of hospital stay, co-morbidities, and other clinical parameters were recorded. Statistical analysis was performed using Microsoft Excel. Results: There were 52 cases of septicaemia due to Ralstonia mannitolilytica, and one Ralstonia isolate was obtained from intraoperative pus. Most of the Ralstonia isolates obtained were Multidrug-Resistant (MDR), showing resistance to imipenem, meropenem, amikacin, aztreonam, and sensitivity to first-line drugs such as ceftazidime, piperacillin-tazobactam, cefoperazone-sulbactam, levofloxacin, and trimethoprim-sulfamethoxazole, resulting in successful treatment. Out of 53 cases, one patient succumbed to death due to surgical complications. Environmental sampling did not yield any organisms resembling Ralstonia spp. Conclusion: The environmental source of the Ralstonia bacteraemia outbreak could not be identified in this study. All patients except one were successfully treated with antibiotics. Clinicians and microbiologists should remain vigilant in case any such case arises to prevent further outbreaks

Autoimmune hemolytic anemia in a patient with Malaria

Autoimmune Hemolytic Anemia (AIHA), a very infrequent condition which represents a group of disorders in which presence of autoantibodies directed against self-antigens leads to shortened red cell survival. Till date, a very few cases of AIHA in Malaria patients are reported worldwide but still AIHA should be considered a relatively rare cause of anemia in malaria. A 20 year male presented with intermittent fever since seven days and yellowish discoloration of urine and sclera since 5 days. He was transfused three units of blood at a private clinic before one month. On examination, pallor, icterus and spelnomegaly were present. Hemoglobin (Hb) was 3.2 gm% and peripheral smear revealed ring forms of both Plasmodium vivax and Plasmodium falciparum. Serum LDH and Serum billirubin (Indirect and Direct) were high. This patient′s blood group was B +ve with positive autocontrol. Indirect Antiglobulin Test (IAT), antibody screening and antibody identification were pan-positive with reaction strength of +4 against each cell. Direct Antiglobulin Test was +4 positive anti IgG and negative with anti C3. He was treated with Artesunate and methylprednisone. Least incompatible, saline washed O Neg and B neg red cells were transfused on the 2 nd day of starting treatment. Hb was raised to 6.1 gm% on 4 th day. Patient was discharged on 9th day with Hb 7.0 gm% with oral tapering dose of steroids. In the above case, patient was suffering from high grade malarial parasitemia with co-existing autoimmune RBC destruction by IgG auto-antibodies which led to sudden drop in Hb and rise in serum LDH and indirect billirubin. Least incompatible packed red cells along with antimalarials and steroids led to clinical improvement. So far, one case report each from India, Korea, Canada and Germany and one case series report of three cases from India have been reported. Under-reporting or rarity of this phenomenon may be accountable for this

Anthrax Edema Toxin Requires Influx of Calcium for Inducing Cyclic AMP Toxicity in Target Cells

The anthrax edema toxin comprises two proteins: protective antigen and edema factor. Anthrax protective antigen binds to the receptors on the surface of target cells and facilitates the entry of edema factor into these target cells. Edema factor (EF) is an adenylate cyclase that catalyzes the synthesis of cyclic AMP (cAMP) in the cytosol of the host cells. In this study, we examined the requirement of extracellular calcium for anthrax edema toxin-induced toxicity in host cells. The cAMP response generated by edema toxin was analyzed in a variety of cells, including CHO, macrophage-like RAW264.7, human neutrophils, and human lymphocytes. Our investigations reveal that after EF reaches the cell cytosol, a rapid influx of calcium is triggered in the host cell that has a pivotal role in determining the cAMP response of the affected cells. Although the cAMP response generated by edema toxin in different cell types varied in intensity and in the time of initiation, the influx of calcium invariably preceded cAMP accumulation. Agents that blocked the uptake of calcium also inhibited edema toxin-induced accumulation of cAMP in the host cells. This is the first report that demonstrates that edema toxin induces accumulation of cAMP in lymphocytes. By accumulating cAMP, a potent inhibitor of immune cell function, edema toxin may actually be poisoning the immune system and thus facilitating the survival of the bacteria in the host

Hydrophobic residues Phe552, Phe554, Ile562, Leu566, and Ile574 are required for oligomerization of anthrax protective antigen

Anthrax protective antigen (PA) plays a central role in facilitating the entry of active toxin components, namely, lethal factor and edema factor, into the cells. PA is also the main immunogen of both human and veterinary vaccine against anthrax. During host cell intoxication, protective antigen binds to the receptors on cell surface, gets proteolytically activated, oligomerizes to form a heptamer and binds to lethal factor or edema factor. The complex, formed by binding of lethal factor or edema factor to oligomerized PA, is internalized by receptor-mediated endocytosis. Acidification of the endosome results in the insertion of the heptamer into the membrane, thereby forming a pore through which lethal factor or edema factor can translocate into the cytosol. In this study we have identified hydrophobic residues, Phe552, Phe554, Ile562, Leu566, and Ile574, which are required for oligomerization of anthrax protective antigen. Mutation of these conserved residues to alanine impaired the oligomerization of protective antigen. Consequently, these mutants became nontoxic in combination with lethal factor and edema factor. Therapeutic importance of these mutants and their potential as vaccine candidates is discussed

Inequity in awareness and utilization of adolescent reproductive and sexual health services in union territory, Chandigarh, North India

Background: Adolescents are a heterogeneous, vulnerable, and sexually active group. Geographical and educational health disparities exist among urban, rural, and slum adolescents and among out-of-school and school-going adolescents, respectively. Adolescent reproductive and sexual health (ARSH) services should be implemented in a manner to minimize health inequities among them. Objectives: To ascertain the extent of awareness and utilization of ARSH services provided under reproductive and child health(RCH) program among adolescents in Chandigarh. Materials and Methods: A cross-sectional study was conducted among 854 adolescents (402 household, 200 out-of-school, and 252 school-going adolescents) in Chandigarh using pretested validated interview schedule on awareness and utilization of adolescent reproductive and sexual health services from February to April 2011 in North Indian Union Territory of Chandigarh. Ordinal regression analysis was done to study the association of socio-demographic variables with awareness and utilization of ARSH. Results: Awareness about contraception and health services was significantly less among rural (12.7% and 1.1%, respectively) adolescents as compared to slum (17.9% and 4.6%, respectively) and urban adolescents (33.5% and 7.8%, respectively) (P < 0.05). Out-of-school adolescents were utilizing the preventive [odds ratio (OR) 0.39, P < 0.001] and curative services significantly lesser (OR = 0.54, P < 0.001) and had higher substance abuse (OR = 4.26, P= 0.006). Awareness was significantly associated with older age of adolescents (OR = 4.4,P < 0.001), poor education of father (OR = 0.5, P = 0.002), rural area (OR = 0.56, P = 0.001), and out-of-school status (OR = 0.35, P < 0.001). Conclusion: Awareness and utilization of ARSH services was inequitable and was more among urban and school-going adolescents. Educational status was the most important factor affecting it