nik nuratiqah nik abeed, xk cheong, najma kori, petrick periyasamy, boon hau ng, andrea ban, nor safiqah sharil, ilham ismail, mahrunnisa mahadi.  (2025).  triple hits: concurrent pulmonary kaposi’s sarcoma, tuberculosis, and pneumocystis jirovecii pneumonia in a newly diagnosed retroviral patient.  - respirology.  253 - 253. 

wenjian zhao, muhamad riduan daud, hashwin singh tejpal singh, sophia ogechi ekeuku, xiong khee cheong, najma kori, petrick periyasamy & kok-yong chin.  (2025).  the use of calcaneal quantitative ultrasound as a bone health screening tool amongst people living with hiv and taking tenofovir-based antiretroviral therapy: a pilot study.  - biomedicines.  1 - 11. 

chee lan lau, ramliza ramli, petrick periyasamy, toh leong tan, hui-min neoh, aliza mohamad yusof, zainina zainal abidin, noranati zulkifli chia, mohd syazwan mohd saaid, munirah abdul aziz, isa naina-mohamed.  (2025).  performance of direct-from-blood-culture disk diffusion antibiotic susceptibility testing and its impact on antibiotic adjustment in bloodstream infections at a malaysian tertiary center.  - microbiology spectrum.  1 - 19. 

ariff khalid, jacinta santhanam, mohd nizam tzar, ang-lim chua, sharifah fadilah abdul wahid, wan rahiza wan mat, raha abd rahman, petrick periyasamy .  (2025).  evaluation of a pcr-based lateral flow device for detecting aspergillus and candida species from clinical specimens.  - heliyon.  1 - 8. 

jennifer sok tin ting, ken siong hou wong, petrick periyasamy, roszalina ramli.  (2025).  methicillin-resistant staphylococcus aureus (mrsa) infection of the temple region of the face: case report.  - medicine.  1 - 6. 

ze chen lee, chu ee seow, petrick periyasamy .  (2024).  double trouble: an unusual case of klebsiella pneumoniae invasive syndrome with liver abscess, gallbladder empyema and infective endocarditis.  - bmc infectious diseases.  1 - 6. 

putri sabrina mohamed yusoff, norsyahida arifin, petrick periyasamy, nor rafeah tumian, fuad ismail, raja zahratul azma raja sabudin, zulkarnain md idris, noor wanie hassan, emelia osman.  (2024).  a comparative analysis of blood and faecal-based laboratory methods in the diagnosis of extraintestinal microsporidia infection.  - malaysian journal of pathology.  299 - 306. 

kon ken wong, noor zetti zainol rashid, umi kalsom ali, nur hazlin chong, shairah abdul razak, najma kori, petrick periyasamy, alfizah hanafiah.  (2024).  genome sequencing and phylogenetic analysis of sars-cov-2 isolated from patients with covid-19 in hospital canselor tuanku muhriz (hctm), malaysia.  - sains malaysiana.  1767 - 1776. 

zainina zainal abidin, zetti zainol rashid, umi kalsom ali, wong kon ken, petrick periyasamy, mohd noor mat isa.  (2024).  sars-cov-2 infection in hiv patients: clinical characteristics, outcomes and duration of positivity.  - malaysian journal of pathology.  492 - 492. 

wahab, a.a, nurazizah, s.m.a, ding, c.h, muttaqillah, n.a.s, nordashima, a.s, kori, n, periyasamy, p.  (2023).  non-bacteremia liver abscess caused by burkholderia pseudomallei from a tertiary teaching hospital in malaysia: a case report and literature review.  - tropical biomedicine.  290-294. 

chee lan lau, ramliza ramli, petrick periyasamy, toh leong tan, hui-min neoh, aliza mohamad yusof, zainina zainal abidin, noranati zulkifli chia, mohd syazwan mohd saaid, munirah abdul aziz, isa naina-mohamed.  (2025).  performance of direct-from-blood-culture disk diffusion antibiotic susceptibility testing and its impact on antibiotic adjustment in bloodstream infections at a malaysian tertiary center.  - microbiology spectrum.  1 - 19. 

jennifer sok tin ting, ken siong hou wong, petrick periyasamy, roszalina ramli.  (2025).  methicillin-resistant staphylococcus aureus (mrsa) infection of the temple region of the face: case report.  - medicine.  1 - 6. 

ilham ismail, mahrunissa mahadi, cheong xiong khee, najma kori, petrick k. periyasamy, norlela sukor..  (2025).  fungal shadows: diagnostic and management challenges of adrenal histoplasmosis in an immunocompetent adult.  - journal of the asean federation of endocrine societies.  99 - 100. 

xiong khee cheong, juen kiem tan, ummu afeera zainulabid, najma kori, petrick ramesh periyasamy.  (2025).  a fatal case of adenovirus encephalitis in an adult with end-stage renal disease.  - cureus.  1 - 7. 

ariff khalid, jacinta santhanam, mohd nizam tzar, ang-lim chua, sharifah fadilah abdul wahid, wan rahiza wan mat, raha abd rahman, petrick periyasamy .  (2025).  evaluation of a pcr-based lateral flow device for detecting aspergillus and candida species from clinical specimens.  - heliyon.  1 - 8. 

sharmili vidyadaran, mohan arumugam.  (2025).  cytokine storm: inflammation can harm.  - .  1 - 12. 

putri sabrina mohamed yusoff , norsyahida arifin , nurul shazalina zainudin ,nurulhasanah othman , rahmah noordin , asmahani azira abdu sani , wan mohd aizat wan kamaruddin , petrick periyasamy , wong kon ken , emelia osman .  (2025).  pengenalpastian dan penghasilan penanda diagnostik protein enterocytozoon bieneusi (b7xj00) untuk mikosporidiosis tersebar.  - simposium parasitologi & perubatan tropika 2025.  . 

muhamaad razis ismail, dr petrick @ ramesh k periyasamy.  (2025).  budak senang kena.  - my metro.  . 

mohd rohaizat bin hassan, azmawati mohammed nawi, rozita hod, azimatun noor aizuddin, norfazilah ahmad, asrul bin abdul wahab, tzar mohd nizam bin khaithir, faiz daud, sharifah azura salleh, petrick @ ramesh, najma kori.  (2020).  bantuan penuh hctm: setinggi penghargaan rakyat malaysia.  - buletin bilik gerakan covid-19 hctm.  1-4. 

dr petrick @ ramesh periyasamy.  (2020).  bicara persada 59: covid 19, selamatkah kita?.  - .  1. 

petrick @ ramesh a/l k periyasamy.  (2020).  demam campak boleh bawa maut.  - mingguan malaysia.  34. 

petrick periyasamy, kirtinee ramesh.  (2025).  leptospirosis not minor illness, public warned.  - the sun .  . 

ummu afeera zainulabid, cheong xiong khee, najma kori, jasmine kueh wui thing, imran zainuddin, isa mohamed rose , ramliza ramli, muhammad zahid abdul muien, siti roszilawati ramli , petrick periyasamy.  (2025).  no one taught you this: bartonella henselae – a forgotten cause of hepatosplenomegaly in textbooks.  - 4th asia pacific rickettsial conference.  60 - 60. 

u.a. zainulabid , x.k. cheong, n. kori, p. periyasamy, m.z. abdul muien, r. musily, i. mohamed rose, n. zaidan, n. ismail ,h.m. neoh , h.m. gan .  (2025).  rapid nanopore sequencing as a key diagnostic tool in adrenal histoplasmosis after a year of uncertainty.  - escmid global abstract book 2025.  2561 - 2562. 

zainina zainal abidin, zetti zainol rashid, umi kalsom ali, wong kon ken, petrick periyasamy, mohd noor mat isa.  (2025).  sars-cov-2 infection in hiv patients: duration and whole genome sequencing.  - 2nd apic-adva summit on infectious diseases and immunization 2025, singapore.  . 

nurul syafiqah nabila abdul kadir, siti norlia othman, norzuriza mohd rais, hui-min neoh, meng ling moi, najma kori, petrick periyasamy and nor azila muhammad azami.  (2025).  association between viral factors and clinical manifestations observed in dengue patients in malaysia.  - postgraduate research conference 2025.  .