Total Experience - 21 Years

• KIMSHEALTH 2007- current
• Govindan's Hospital 2005- 2007
• SUT Hospital 2004-2005

• Fever of unknown origin (prolonged fever)
• Complicated infections affecting bone, joint, brain, valve, abdominal, and other organs
• Infections in special populations- immunocompromised, post-transplant infections
• Sexually transmitted infections (STI), including HIV, and prevention of STIs
• Tuberculosis
• Infections in pregnancy
• Adolescent and adult vaccines and Travel medicine
• Antimicrobial stewardship and Hospital infection control

• MBBS (Coimbatore Medical College), 1997
• DNB Medicine (Trivandrum Medical College), 2003
• Fellowship training in Infectious Diseases (Apollo Hospitals, Chennai), 2015
• Observer in Transplant Infectious Diseases (Karmanos Cancer Centre), 2016

• CIDS India- Clinical Infectious Diseases Society, India
• IDSA,- Infectious Diseases Society of America
• SHEA- Society for Hospital Epidemiology of America
• ESCMID- European Society for Clinical Microbiology and Infectious Diseases
• IMA- Indian Medical Association

• SHEA International Ambassador
• International Councillor, SHEA Board of Trustees (2024-25)
• Editorial Board Member for Antimicrobial Stewardship and Healthcare Epidemiology (ASHE)
• Chair, Infection Control Committee, CIDS India
• Joint Secretary, CIDS India
• KARSAP- Nodal officer - IPC and AMS in private hospitals, Kerala
• Expert group panel member for national antimicrobial guidelines for treatment of infections, NCDC (National Centre for Disease Control), India

• Book chapters authored, co-authored
• Concise handbook of Infectious diseases
• NAPCON 2020 conference book- Clinical and Laboratory Predictors of Viral Pneumonias.
• Section Editor CIDS Infectious Diseases Update, 2025
• Antimicrobial and Diagnostic Stewardship - CIDS Infectious Diseases Update, 2025

Journal article publications until September 2025 Publications

• Scrotal Ulceration During Induction Therapy of Acute Promyelocytic Leukemia With ATRA. American Journal of Hematology 75:260–261 (2004). Keechilat Pavithran, Rajalakshmi Arjun, Raman Aruna, and Mathew Thomas
• Refractory iron deficiency anemia - Is Helicobacter pylori the Culprit? MedGenMed: Medscape general medicine5(2):3. May 2003. Keechilat Pavithran, Rajalakshmi Arjun, Raman Aruna, and Mathew Thomas
• Undifferentiated connective tissue disease with pulmonary involvement. Journal of Assoc Physicians India. 2011 Mar;59:175-8. P Arjun, K A Ameer, S Sasikumar, A Rajalakshmi, T A Hari, Mathew Thomas
• Acute axonal polyneuropathy in an unventilated patient with sepsis. J Assoc Physicians India. 2006 Mar;54:235-7. R Mathew, A Rajalakshmi, D Grillet, Veena S Krishnan, S Madhusudhananan
• Common Disease at an Uncommon Site, Rajalakshmi A et al. Kerala Journal of Orthopaedics 2016;28 (1–2):82–84.
• Disseminated Rhinosporidiosis Masquerading as Sarcoma. J Assoc Physicians India. 2016 Dec;64(12):86-87. Rajalakshmi Arjun, Firoz Khan, Biji Aravind
• Disseminated nocardiosis masquerading as metastatic malignancy. Lung India. 2016 Jul-Aug; 33(4): 434–438. Rajalakshmi Arjun, Arjun Padmanabhan, Bhanu Prakash Reddy Attunuru, and Prerna Gupta
• Adult pertussis does exist in India- a case report and review of literature, JCCP 3(1), March 2017
• A Study of 24 Patients with Colistin-Resistant Gram-negative Isolates in a Tertiary Care Hospital in South India. Indian J Crit Care Med. 2017 May; 21(5): 317–321. Rajalakshmi Arjun, Ram Gopalakrishnan, P. Senthur Nambi, D. Suresh Kumar, R. Madhumitha, and V. Ramasubramanian
• Listeria in Adults - Truly Rare or Rarely Diagnosed in India. J Assoc Physicians India. 2017 Jul;65(7):106-108. Arjun Rajalakshmi , Ram Gopalakrishnan , P Senthur Nambi , P Vishnu Rao , V Ramasubramanian
• A Rare Case of Strongyloides Hyperinfection from Hypogammaglobulinemia. Indian J Crit Care Med. 2017 Jul;21(7):466-468. Paidi Ramakrishna Reddy, Sujith M Thomas, A Rajalakshmi, Deepak Vijayan, Muraleedharan Raman
• A cluster of cases of melioidosis following floods in Chennai, India. JCCP 3(2). September 2017. Rajalakshmi Arjun, Abdul Ghafur, Vidya Devarajan, Panchatcharam Senthur Nambi, Venkatasubramanian Ramasubramanian Durairajan Suresh Kumar, Ram Gopalakrishnan
• Candidemia species distribution and emergence of Candida haemulonii complex isolates resistant to fluconazole in South India. JCCP 4(2). September 2018. Arjun Rajalakshmi, Periyaveed Shahul hameed Shareek, Durairajan Sureshkumar, Ram Gopalakrishnan, Elumalai Yamuna, Venkatasubramanian Ramasubramanian.
• Multiplex polymerase chain reaction (PCR) for rapid bacterial identification from blood cultures: ready for prime time in India? Yamunadevi Vellore Ramanathan, Rajalakshmi Arjun, Vidya Krishna, Anil Tarigopula and Ram Gopalakrishnan. JCCP (Vol. 5, Issue 1)
• Elsa George, A Rajalakshmi. Melioidosis - A Case Series from Kerala. Assoc Physicians India. 2019 Dec;67(12):40-43.
• Streptococcus gallolyticus Bacteremia: Experience from a Tertiary Center in South India. Vettakkara KM Niyas, Rajalakshmi Arjun, Aswathy Sasidharan, George A Palakunnath. Indian J Crit Care Med. 2020 Oct;24(10):943-945.
• International Nosocomial Infection Control Consortium report, data summary of 50 countries for 2010-2015: Device-associated module. American Journal of Infection Control 44 (2016) 1495-504
• Six-year study on peripheral venous catheter–associated BSI rates in 262 ICUs in eight countries of South-East Asia: International Nosocomial Infection Control Consortium findings. The Journal of Vascular Access. 2021 Jan;22(1):34-41
• Breakthrough COVID-19 Infections among Health Care Workers after Two Doses of ChAdOx1 nCoV-19 Vaccine, QJM-2021-839. VKM Niyas, Rajalakshmi Arjun
• Response to: The new context in which breakthrough infections might emerge. QJM: monthly journal of the Association of Physicians. (accepted for publication). VKM Niyas, Rajalakshmi Arjun
• COVID-19 associated Rhino-orbital Mucormycosis: a Single Centre Experience of Ten Cases. QJM: 2021 Jun 28;hcab176. Rajalakshmi Arjun, Vinod Felix, Muhammed Niyas, Suresh Kumar, Ragitha Binu Krishnan, Viji Mohan, Aneesa Ansar, Shivram Gautaam, Sree L.
• Arjun R et al, Susceptibility and serotypes of Streptococcus pneumoniae isolates in invasive pneumococcal disease: a study from Kerala, South India. Infez Med. 2020 Dec 1;28(4):558-564.
• Etiological and clinical profile of virus-associated community-acquired pneumonia in adults. Chest Congress, Italy 2020. Ponnuthurai Bala, Padmanabhan Arjun, Arjun Rajalakshmi
• Arjun R, Kalpana E John, Niyas VKM, Sreerekha R Nair, Viji Mohan, Raveendran Sarala Ratheesh. Achromobacter spp. bacteremia outbreak related to contaminated furosemide ampoules. Le Infezioni in Medicina, n. 3, 427-433, 2021
• Niyas VKM, Rahulan SD, Arjun R, Sasidharan A. ICU-acquired Candidemia in COVID-19 Patients: An Experience from a Tertiary Care Hospital in Kerala, South India. Indian J Crit Care Med 2021;25(10):1205–1206.
• B Ganesh, P Arjun, KA Ameer, V Kesavan, A Rajalakshmi, M Niyas, Deepak Vijayan, Raman Muralidharan. RT-PCR Negative COVID 19–Akin to Smear Negative Pulmonary Tuberculosis?–A Case Report. IMA Kerala Medical Journal 14 (1), 14-17
• Patil S, Beigh A, Balan S, Murlidharan P, Jethwa S, Rajalakshmi A. A prospective study of clinical presentation, need for hospitalisation, microbiology and outcome of urinary tract infections in diabetes mellitus. MRIMS Journal of Health Sciences. 2019 Apr 1;7(2):36.
• Chandran S, Arjun R, Sasidharan A, Niyas VK, Chandran S. Clinical Performance of FilmArray Meningitis/Encephalitis Multiplex Polymerase Chain Reaction Panel in Central Nervous System Infections. Indian J Crit Care Med 2022; 26 (1):67-70.
• Arjun R, Niyas VK, Thomas SM, Raman M, Thomas A, Aloysius W, Mahendran B. Multisystem Inflammatory Syndrome in Adults and Adolescents (MIS-A) Associated with COVID-19 Infection: A Single-center Experience. Indian J Crit Care Med 2022; 26 (1):145-148.
• Niyas VK, Shamnath A, Roshni KJ, Bhoyar RC, Vimalraj AN, Jolly B, Joseph A, Senthivel V, Payyappilly RJ, Imran M, Vaman RS et al. Genomic analysis of early SARS-CoV-2 breakthrough infections from the state of Kerala suggest a preponderance of variants of concern. OSF Preprints.2022
• Sasikumar A, Niyas VK, Arjun R, Viswanathan G. Prolonged rapid antigen test positivity among COVID-19 patients. Journal of Family Medicine and Primary Care. 2022 Apr 1;11(4):1590.
• R. Arjun, P. Patil, P. Gupta, P. Wagle. Prospective cohort study on rectal colonization with Carbapenem Resistant Enterobactericeae in patients admitted in a tertiary care hospital. International Journal of Infectious Diseases 45S (2016) 1–477
• Ananthanarayanan R, Unnikrishnan R, Shyni S, Purayyil A. Prevalence of Tuberculous Spondylodiscitis and Diagnostic Utility of Xpert MTB RIF. Open Forum Infect Dis. 2017 Oct 4;4(Suppl 1):S622.
• Haque A, Ameer A, Ananthanarayanan R, Padmanabhan A. Efficacy of Influenza and Pneumococcal Vaccination in Preventing COPD Exacerbation. Open Forum Infect Dis. 2017 Oct 4;4(Suppl 1):S470
• Ananthanarayanan R, Sasidharan A, Suju S. 2103. Clinical Profile of Patients with Burkholderia cepacia complex Bacteremia and Contaminated Ultrasound Gel as Possible Source of Infection. Open Forum Infect Dis. 2018 Nov 26;5(Suppl 1):S616–7.
• Ponnuthurai B, A AK, Padmanabhan A, Arjun R. Etiological and clinical profile of virus-associated community-acquired pneumonia in adults. Chest. 2020 Jun;157(6): A55.
• Ananthanarayanan R, Muhammed NVK, Sasidharan A. 720. Clinical Performance of Film Array Gastrointestinal Pathogen Panel in Diarrhea. Open Forum Infect Dis. 2020 Dec 31;7(Suppl 1):S410–1.
• Ananthanarayanan R, Aswathy S, Chandran S. Clinical Performance of Film Array Meningitis/Encephalitis Multiplex PCR Panel in CNS Infection, Open Forum Infectious Diseases, Volume 6, Issue Supplement_2, October 2019, Pages S508–S509
• Niyas VKM, Ananthanarayanan R, Sasidharan A. 683. Epidemiology and Microbiology of Infective Endocarditis: A Six Year Experience. Open Forum Infect Dis. 2021 Dec 4;8(Suppl 1): S444
• Niyas VKM, Ananthanarayanan R, Jeffery Jomes, Sasikala Devi AA, Aswathy S. Most Psoas Abscesses are Pyogenic; not Tuberculous: Experience from South India, Open Forum Infectious Diseases, Volume 8, Issue Supplement-1, November 2021, Page S768.
• Niyas V, Arjun R, Felix V, Kumar M, Lalitha S. COVID-19 associated Invasive Fungal Rhinosinusitis: A Retrospective Analysis of 15 Cases. International Journal of Infectious Diseases. 2022 Feb;116: S56-S56.
• VKM Niyas, R Arjun, L Titus, F Hussain, LS Suresh, J Jomes, N Gupta. Hybrid immunity versus Vaccine Immunity among Indian Health Care Workers after ChAdOx-nCov-19 vaccine, QJM: An International Journal of Medicine, 2022;, hcac155
• R Arjun, MJ Varsha, VKM Niyas, F Hussain, S Surendran. Group B streptococcal bacteremia; Experience from South India. Microbial Drug Resistance, volume 28, number 7, 2022
• Harshan M, Niyas VKM, Arjun R. Duodenal obstruction due to Strongyloides stercoralis in a patient with HTLV-1 infection. Trop Doct. 2022 Jul 13:494755221114318. doi: 10.1177/00494755221114318
• A Tazneen, N Nina, et al Birthing Experience and Perinatal Outcomes with COVID-19: A Prospective Study. Journal of South Asian Federation of Obstetrics and Gynaecology (2022): 10.5005/jp-journals-10006-2057
• Nishal N, Arjun P, Arjun Rajalakshmi, Ameer K.A, Nair Sanjeev, Mohan Alladi. Diagnostic yield of CBNAAT in the diagnosis of extrapulmonary tuberculosis: A prospective observational study. Lung India: Sep–Oct 2022 - Volume 39 - Issue 5 - p 443-448
• Balakrishnan R, Padmanabhan A, Ameer KA, Arjun R, Muralidharan P. Cytomegalovirus pneumonitis in an immunocompromised host. Lung India. 2022 Mar-Apr;39(2):202-204.
• Yadav, P.D., Niyas, V.K.M., Arjun, R., Sahay, R.R., Shete, A.M., Sapkal, G.N., D. Pawar, S., Patil, D.Y., Gupta, N. and Abraham, P. (2022), Detection of Zika virus disease in Thiruvananthapuram, Kerala, India 2021 during the second wave of COVID-19 pandemic. J Med Virol, 94: 2346-2349.
• Yadav PD, Kaur H, Gupta N, Sahay RR, Sapkal GN, Shete AM, Deshpande GR, Mohandas S, Majumdar T, Patil S, Pandit P, Kumar A, Nyayanit DA, Sreelatha KH, Manjusree S, Sami H, Khan HM, Malhotra A, Dhingra K, Gadepalli R, Sudha Rani V, Singh MK, Joshi Y, Dudhmal M, Duggal N, Chabbra M, Dar L, Gawande P, Yemul J, Kalele K, Arjun R, Nagamani K, Borkakoty B, Sahoo G, Praharaj I, Dutta S, Barde P, Jaryal SC, Rawat V. Zika a Vector Borne Disease Detected in Newer States of India Amidst the COVID-19 Pandemic. Front Microbiol. 2022 Jun 10;13:888195.
• Arjun R, Niyas VK, John KE, Nair A, Hussain F. Impact of adding Rapid Polymerase Chain Reaction-based Blood Culture Identification Panel to Antimicrobial Stewardship Program: Initial Experience. Indian J Crit Care Med 2022; 26 (10):1155-1157.
• Gurudas G, Arjun R, Jain N, Ranganayaki V, Sasikumar C, Viji Mohan, Hussain F, Pournami F. Prevalence of Group B Streptococcus in pregnant women in Kerala and relation to neonatal outcomes: a prospective cross-sectional study, Journal of Tropical Pediatrics, Volume 68, Issue 6, December 2022
• Rosenthal VD et al., The impact of healthcare-associated infections on mortality in ICU: A prospective study in Asia, Africa, Eastern Europe, Latin America, and the Middle East. AJIC. September 5, 2022.
• Rosenthal VD, Yin R, Rodrigues C, Myatra SN, Divatia JV, Biswas SK, Shrivastava AM, Kharbanda M, Nag B, Mehta Y, Sarma S, Todi SK, Bhattacharyya M, Bhakta A, Gan CS, Low MSY, Kushairi MBM, Chuah SL, Wang QY, Chawla R, Jain AC, Kansal S, Bali RK, Arjun R, Davaadagva N, Bat-Erdene B, Begzjav T, Basri MNM, Tai CW, Lee PC, Tang SF, Sandhu K, Badyal B, Arora A, Sengupta D, Tao L, Jin Z. Multinational prospective cohort study over 18 years of the risk factors for ventilator-associated pneumonia in 9 Asian countries: INICC findings. Am J Infect Control. 2022 Nov 15:S0196-6553(22)00805-7. doi: 10.1016/j.ajic.2022.11.005. Epub ahead of print. PMID: 36400318.
• Harshan, Madhuri; Arjun, Rajalakshmi; Niyas, Vettakkara K. M.. Burden of TB during COVID-19 pandemic-single center experience. Journal of Family Medicine and Primary Care 11(11):p 7504-7505, November 2022. | DOI: 10.4103/jfmpc.jfmpc_754_22
• Arjun, Rajalakshmi; Niyas, Vettakkara Kandy Muhammed; Hussain, Febeena; Sasidharan, Aswathy; Titus, Lovely. Epidemiology of malaria from a low-prevalence Indian state: A single-center study. Journal of Family Medicine and Primary Care 11(11):p 7495-7496, November 2022. | DOI: 10.4103/jfmpc.jfmpc_613_22
• Rosenthal, V., Jin, Z., Memish, Z., Rodrigues, C., Myatra, S., Kharbanda, M., et al. (2023). Multinational prospective cohort study of rates and risk factors for ventilator-associated pneumonia over 24 years in 42 countries of Asia, Africa, Eastern Europe, Latin America, and the Middle East: Findings of the International Nosocomial Infection Control Consortium (INICC). Antimicrobial Stewardship & Healthcare Epidemiology, 3(1), E6. doi:10.1017/ash.2022.339
• V S Harikrishnan, V K M Niyas, R Arjun, P Murlidharan, M Sasidharan, R Aswini Rajeswari, Esophageal mucormycosis, QJM: An International Journal of Medicine, 2023; hcad031
• Arjun R, Niyas VKM, Sasidharan A, Jomes J, Yadav MK, Kesavan S. Peripherally Inserted Central Catheters-associated blood stream infections—occurrence, risk factors, and pathogens, a single center study. Journal of Infection Prevention. 2023;0(0). doi:10.1177/17571774231165404
• Patil S, Balan S, Murlidharan P, Jethwa S, Rajalakshmi A. Postrenal transplant tuberculosis of the ankle joint: A case report. J Egypt Soc Nephrol Transplant 2023;23-77-9
• Giri J, Poojary A, Coto BS, Agarwal A, Datta B, Ganguly S, Hindlekar P, Patil P, Vitto JVA, Choi A, Kim S, Basaiawmoit B, Biswas D, Prabhakar S, Sharma A, Deshwal N, Shin JA, Jung J, Eshwara VK, Varma M, Mukhopadhyay C, Mundkur SC, Shetty A, Kurup S, Rajalakshmi A, Kumar R, Shah S, Fouzdar H, Park O, Kim H, Budhiraja S, Verma A, Dutt A, Mehta Y, Patil N, Pollatu JC, Rikumahu M, Inchaiya P, Weangsima D, McCaughan J, Chandra R, Setyohariyati FDS, Sihite CRJ, Bawaningtyas BB, Octaviani SN, Hoai VTT, Sang DM, Van Thang B, Van Anh DT. Preventing Risks of Infections and Medication Errors in IV therapy (PRIME): a patient safety initiative. Br J Nurs. 2023 Jul 27;32(14):S4-S12. doi: 10.12968/bjon.2023.32.14.S4. PMID: 37495417.
• Rosenthal VD, Yin R, Abbo LM, Lee BH, Rodrigues C, Myatra SN, Divatia JV, Kharbanda M, Nag B, Rajhans P, Shingte V, Mehta Y, Sarma S, Todi SK, Bhattacharyya M, Basu S, Sahu S, Mishra SB, Samal S, Chawla R, Jain AC, Nair PK, Kalapala D, Arjun R, Singla D, Sandhu K, Badyal B, Palaniswamy V, Bhakta A, Gan CS, Mohd-Basri MN, Lai YH, Tai CW, Lee PC, Bat-Erdene I, Begzjav T, Acharya SP, Dongol R, Ikram A, Tumu N, Tao L, Jin Z. An international prospective study of INICC analyzing the incidence and risk factors for catheter-associated urinary tract infections in 235 ICUs across 8 Asian Countries. Am J Infect Control. 2023 Jul 25:S0196-6553(23)00519-9. doi: 10.1016/j.ajic.2023.07.007. Epub ahead of print. PMID: 37499758.
• KC Shikha, KA Ameer, A Rajalakshmi, P Arjun. Association between Cycle Threshold Value of Closed System Real Time Reverse Transcription Polymerase Chain Reaction and COVID-19 Disease Severity. Pulmon, 24(3);p100-103, Sep-Dec 2022
• VD Rosenthal, Z Jin, R Yin, S Sahu, P Rajhans et al.,. Assessing the impact of a multidimensional approach and an 8-component bundle in reducing incidences of ventilator-associated pneumonia across 35 countries in Latin America, Asia, the Middle East, and Eastern Europe. Journal of Critical Care, 2024
• Rosenthal VD, Jin Z, Rodrigues C, et al. Risk factors for mortality over 18 years in 317 ICUs in 9 Asian countries: The impact of healthcare-associated infections. Infection Control & Hospital Epidemiology. 2023;44(8):1261-1266. doi:10.1017/ice.2022.245
• Rosenthal VD, Jin Z, Memish ZA, et al. Multinational prospective cohort study of rates and risk factors for ventilator-associated pneumonia over 24 years in 42 countries of Asia, Africa, Eastern Europe, Latin America, and the Middle East: Findings of the International Nosocomial Infection Control Consortium (INICC). Antimicrobial Stewardship & Healthcare Epidemiology. 2023;3(1):e6. doi:10.1017/ash.2022.339
• VD Rosenthal, R Yin, C Rodrigues, SN Myatra Multinational prospective cohort study over 18 years of the risk factors for ventilator-associated pneumonia in 9 Asian countries: INICC findings. American journal of infection control, 2023
• VD Rosenthal, R Yin, C Rodrigues, SN Myatra. Multinational prospective cohort study of incidence and risk factors for central line-associated bloodstream infections over 18 years in 281 ICUs of 9 Asian countries. The Journal of Vascular Access, 2023
• VD Rosenthal, R Yin, SN Myatra, ZA Memish. Multinational prospective study of incidence and risk factors for central-line–associated bloodstream infections in 728 intensive care units of 41 Asian, African, Eastern European, Latin American, and Middle Eastern countries over 24 years. Infection Control & Hospital Epidemiology, 2023
• KZ Rabbani Amaanulla, R Ananthanarayanan et al., Impact of a quality improvement re-training program on the blood culture volume, yield and contamination rates; experience from South India. Open Forum Infectious Diseases, 2023
• VKM Niyas, R Arjun, D Vijayan, PD Yadav. A Cluster of Severe Myositis with Rhabdomyolysis Identified During the Zika Virus Outbreak in Thiruvananthapuram, India, 2021. Journal of Clinical Infectious Diseases Society, 2023
• VKM Niyas, R Arjun, A Sasidharan. Majority of patients does not achieve therapeutic trough levels following a fixed dose vancomycin administration: experience from south India. International Journal of Infectious Diseases, 2023
• Yadav PD, Kaur H, Gupta N, Sahay RR, Sapkal GN, Shete AM, Deshpande GR, Mohandas S, Majumdar T, Patil S, Pandit P, Kumar A, Nyayanit DA, Sreelatha KH, Manjusree S, Sami H, Khan HM, Malhotra A, Dhingra K, Gadepalli R, Sudha Rani V, Singh MK, Joshi Y, Dudhmal M, Duggal N, Chabbra M, Dar L, Gawande P, Yemul J, Kalele K, Arjun R, Nagamani K, Borkakoty B, Sahoo G, Praharaj I, Dutta S, Barde P, Jaryal SC and Rawat V (2022) Zika a Vector Borne Disease Detected in Newer States of India Amidst the COVID-19 Pandemic. Front. Microbiol. 13:888195. doi: 10.3389/fmicb.2022.888195
• N Navakumar, K Salim, T Ahmad, V Ranganayaki, A Rajalakshmi. Critically ill Covid-19 in pregnancy: Case series from a tertiary care centre in South India. Authorea Preprints
• VD Rosenthal, R Yin, LM Abbo, BH Lee, C Rodrigues. An international prospective study of INICC analyzing the incidence and risk factors for catheter-associated urinary tract infections in 235 ICUs across 8 Asian Countries. American Journal of Infection Control, 2024
• B Ponnuthurai, R Arjun, KA Ameer, A Padmanabhan. An Unusual Cause of Lung Abscess. Indian J Chest Dis Allied Sci, 31-34
• B Ganesh, P Arjun, KA Ameer, V Kesavan, A Rajalakshmi, M Niyas, .RT-PCR Negative COVID 19–Akin to Smear Negative Pulmonary Tuberculosis?–A Case Report. Kerala Medical Journal 14 (1), 14-17
• Arjun R, VKM Niyas, Hussain F et al., Clinical and microbiological profile of Viridans group streptococcal bacteraemia; experience from South India. Le Infezioni in Medicina, n. 1, 37-44, 2024
• Rosenthal VD et al ., Examining the Impact of a 9-Component Bundle and the INICC Multidimensional Approach on Catheter-Associated Urinary Tract Infection Rates in 32 Countries across Asia, Eastern Europe, Latin America, and the Middle East. Am J Infect Control. 2024 Mar 2:S0196-6553(24)00105-6. Epub ahead of print. PMID: 38437883.
• Mohan D, Niyas VKM, Arjun R, James AF. Comparative Clinical Characteristics of Cytomegalovirus and Epstein-Barr Virus Mononucleosis in Immunocompetent Hosts: Experience from a Tropical Setting. Infez Med. 2024 Sep 1;32(3):369-372. doi: 10.53854/liim-3203-11. PMID: 39282544; PMCID: PMC11392553.
• Kesavan, Poornima; Ananthanarayanan, Rajalakshmi; Nazeer, Muhammed E.; Mohan, B. Madan; Unnikrishnan, Ranjith. Performance of Multiplex Joint Infection Panel in the Diagnosis of Septic Arthritis. Infectious Diseases in Clinical Practice 32(6):e1407, November 2024. | DOI: 10.1097/IPC.0000000000001407
• Amrutha P, Arjun P, Niyas M, Rajalakshmi A. Distribution of vaccine-preventable respiratory viral infections in 2023: Insights from a Tertiary Care Center in Southern India. Lung India. 2025 Jan 1;42(1):64-65. doi: 10.4103/lungindia.lungindia_207_24. Epub 2024 Dec 24. PMID: 39718922; PMCID: PMC11789952.
• Rukhsar Abdur Rahim Mulla, Rajalakshmi Ananthanarayanan, Vettakkara Kandy Muhammed Niyas, Febeena Hussain, P-872. Clinical and Microbiological Trends in Citrobacter Bacteremia: A Study from South India, Open Forum Infectious Diseases, Volume 12, Issue Supplement_1, February 2025, ofae631.1063, https://doi.org/10.1093/ofid/ofae631.1063
• Hussain F, Ananthanarayanan R, Niyas VKM. Evaluating the effectiveness of antiseptic barrier caps in reducing central line-associated bloodstream infections in the adult ICU. Antimicrobial Stewardship & Healthcare Epidemiology. 2024;4(1):e227. doi:10.1017/ash.2024.462
• Saheed SZ, Goswami D, Niyas VKM, Ananthanaryanan R. Scrub Typhus in Kerala: Demographic, Clinical, and Laboratory Predictors of ICU Admission in a Tertiary Care Setting. Infez Med. 2025
• Vettakkara Niyas, Rajalakshmi Ananthanarayanan, Febeena Hussain. Species distribution, antibiotic susceptibility and clinical characteristics in Enterococcal bacteremia; experience from South India. Mar 1;33(1):106-113.
• Vettakkara Niyas, Rajalakshmi Ananthanarayanan, Febeena Hussain. Species distribution, antibiotic susceptibility and clinical characteristics in Enterococcal bacteremia; experience from South India. ICID, 2024. Mar 1;33(1):106-113.
• https://doi.org/10.1016/j.ijid.2024.107403
• Suresh K, Niyas VKM, Hameed S, Vijayamohan P, Ananthanarayanan R. Self-reported beta-lactam allergy, mislabeling and inappropriate antibiotic use: a study from South India. Antimicrobial Stewardship & Healthcare Epidemiology. 2025;5(1):e145. doi:10.1017/ash.2025.10049
• Reghukumar A, Ananthanarayanan R, Nandakumar KV, et al. When policy-makers have your back: the Kerala experience with state-wide antimicrobial resistance mitigation efforts. Antimicrob Steward Healthc Epidemiol 2025. doi: 10.1017/ ash.2025.10060
• Varghese AR, Ananthanarayanan R, Muhammed Niyas VK, Aloysius Parisavila W, Vishnu BS. Outcome of outpatient parenteral antibiotic therapy (OPAT) program at a tertiary care hospital in India. Antimicrobial Stewardship & Healthcare Epidemiology. 2025;5(1):e203. doi:10.1017/ash.2025.10118
• Vettakkara Kandy Muhammed Niyas, Rajalakshmi Ananthanarayanan, Mohamed Puthiyaveettil Zunimol, Dheeraj Mohan, Sundeep Malla, Steven Van Den Broucke, Erika Vlieghe, Emmanuel Bottieau, Nitin Gupta. Validation of a clinical scoring system to differentiate mycobacterial and bacterial causes of spondylodiscitis: a retrospective cohort study from Kerala, India Le Infezioni in Medicina, n. 3, 303-310, 2025 doi: 10.53854/liim-3303-7
• Balaji V, Bansal N, Gopalakrishnan R, Rodrigues C, Ramasubramanian V, Varghese GM, Nagvekar V, Ray P, Bhattacharya S, Gupta N, Rupali P, Ananthanarayanan R, Vijay S, Walia K. Management of infections caused by Extended-spectrum beta-lactamase-producing Enterobacterales in Indian patients. Indian J Med Microbiol. 2025 Sep 16;58:100974. doi: 10.1016/j.ijmmb.2025.100974.

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