INTRODUCTIONHepatitis B Virus (HBV) is a double-stranded, enveloped DNA virus of the Hepadnaviridae family. It is transmitted parenterally or permucosal exposure to infected blood or other body fluids. Hepatitis B is a serious infectious disease of the liver which affects millions of people worldwide. Chronic viral hepatitis is a major global public health problem, an important cause of morbidity and mortality from sequelae which include chronic hepatitis, cirrhosis and primary liver cancer.1 India has intermediate endemicity of hepatitis B, with hepatitis B surface antigen (HBsAg) prevalence between 2% and 7%.2 HBV (Hepatitis B Virus) infection is an occupational hazard for health care workers and for public safety workers who have exposure to blood and blood products in the workplace and the risk of acquiring HBV infections depends on the frequency of percutaneous and ABSTRACT Background: HBV(Hepatitis B Virus) infection is an occupational hazard for health care workers and the risk of acquiring HBV infections depends on the frequency of percutaneous and permucosal exposure to blood or bloodcontaminated body fluids. Avoiding occupational blood exposure is primary preventive means for the transmission of HBV. However, the single most effective measure for the prevention of hepatitis B is active immunisation. Methods: A cross-sectional study was carried among 204 medical and nursing students in second year of their course using pre-designed questionnaire comprised of questions which included age, sex, qualification, awareness, occupational risk perception & vaccination against hepatitis B infection. Results: 69.12% of the respondents knew various modes of transmission of hepatitis B. More than half (56.86%) of the respondents knew that HBV infection causes liver cancer. 79.41% of the respondents knew the correct course of action after a needle stick injury. Only 61.27% of the respondents knew that blood soaked cotton and dressings are discarded in yellow coloured bags and that sharps and needles are disposed in white coloured bags. Only 36.46% of medical students & 57.41% of nursing students were completely vaccinated. Conclusion: Considering the long-term consequences of HBV infection, the health of the study population is at risk. Preventive strategies against the diseases, especially vaccination programmes, should be developed and taken aggressively to improve the vaccination coverage among the study population.

Background There was evidence that antibiotic usage increased in hospitalized COVID-19 patients during the early days of the pandemic. Objective We assessed the impact of stewardship interventions on antibiotic usage in these patients. Methods We designed a quasi-experimental study using an interrupted time series. Patients were stratified according to the severity category of the illness – mild and moderate-to-severe (O2 saturation ≥94% and <93% respectively). Baseline antibiotic usage data was collected in the pre-intervention phase. Intervention was given in the form of focus group discussion (FGD) and followed up with feedback-audit during the post-intervention phase. Primary outcome was the change in days of therapy (DOT) per 1000 patient-days. Results 361 adult patients were recruited in both phases during July to December, 2020. In the post-intervention phase, DOT per 1000 patient-days reduced from 589 to 523 (P=0.013) and from 843 to 585 (P <0.0001) in mild and moderate-to-severe categories, respectively. De-escalations at 48 hours increased significantly from 21% to 41% (P=0.0079) and from 31% to 62% (P=0.0006), respectively. No difference in mortality was observed. Conclusion We found high usage of empirical antibiotics in adult patients hospitalized with COVID-19. FGD and feedback audits can successfully reduce antibiotic overuse in these patients.

Background: Dengue fever and Dengue Haemorrhagic fever (DF/DHF) is an acute viral disease caused by Dengue virus. The infection is transmitted by the bite of an infected female mosquito- Aedes aegypti. The Dengue virus causes significant morbidity and mortality in many parts of the world, including India, where it was first isolated in Calcutta, West Bengal during 1945. This study was conducted to know the seroprevalence of Dengue virus in a tertiary care hospital, Hyderabad Methods: Blood for serological studies are carefully collected taking due universal precautions from suspected DF/DHF cases (a) as soon as possible after hospital admission or attendance. All the patients were screened for anti-Dengue IgG and IgM antibodies By Enzyme Immunoassay. The study period was 18 months from 2012. Results: From a total of 1327serum samples tested were screened for Dengue IgM and IgG among which 706(53.2%) were positive. 125(17.7%) were only IgM positive and 198(28.05%) of the tested samples showed only IgG positive. 383(54.25%) of the tested samples revealed positive for both IgM and IgG antibodies. Conclusion: Surveillance is prerequisite for monitoring the dengue situation in the area and should be carried out regularly for early detection of an impending outbreak and to initiate timely preventive and control measures. [Int J Res Med Sci 2013; 1(4.000): 448-450

BackgroundAccurate interpretation of antibiotic susceptibility testing (AST) is one of the most crucial functions of the microbiology laboratory. However, its performance depends on a number of critical factors. We conducted a status survey to understand the existing practices in Indian laboratories that have a potential to influence performance of AST. MethodWe developed a 22-point online survey questionnaire on information about respondent's specifications, use of AST consumables, existing quality control protocols, and matters of contention in AST practices, and sent it by Google forms to 362 clinical microbiologists (holding MD or DNB certification). Participation was voluntary. Results were analyzed using descriptive statistics. ResultsAmong 362, a total of 103 returned the questionnaire. The first 100 responses that were complete (all 22 questions answered) were analyzed. Respondents were from medical colleges (61%), private hospitals (26%), and stand-alone laboratories (13%). Analysis revealed that the Clinical & Laboratory Standards Institute (CLSI) guidelines were followed by all. Overall, 54% used disc diffusion as the primary method for performing AST. For the internal quality control testing of media and AST, 24% and 16% had adequate testing components and frequency, respectively. For performing AST of colistin, broth microdilution was used by 19%. Also, 86% participated in external quality control programs, and 54% respondents were dissatisfied or unsure about the development of competencies in AST methodology during their postgraduate training. ConclusionThis survey reveals that potential gaps exist in the performance parameters and internal quality control of AST. There is an urgent need for harmonization in AST performance and postgraduate training in clinical microbiology in India.

Immunology is truly a fascinating discipline that meets the challenge and offers opportunity in ghting and checking the spread of diseases. Many viruses infect humans.The corona virus disease 2019 (COVID-19) pandemic has affected hundreds of millions of people over the world, with more than 4.5 million deaths.The introduction of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) into the human population represents a tremendous medical , economic crisis that remains a world health concern.SARS-CoV-2 infection causes excessive production of pro-inammatory cytokines thereby leading to the development of “Cytokine Storm Syndrome The COVID-19 pandemic triggered an unparalleled pursuit of vaccines to induce specic adaptive immunity, based on virus-neutralizing antibodies and T cell responses.Cytokines are cellular signaling molecules that mediate many biological and immunological actions. Omicron infection can increase immunity against Delta variant, but only if you are vaccinated against coronavirus.