HPCSA Microbiology Research Topics for Registrars – South Africa

Comprehensive list of microbiology research topics designed specifically for HPCSA registrars in South Africa. These topics address common and high-impact microbiology challenges including antimicrobial resistance, tuberculosis diagnostics, HIV-related infections, bloodstream infections, urinary tract infections, hospital-acquired infections, fungal infections, sexually transmitted infections, laboratory turnaround time, infection prevention, outbreak investigation, and diagnostic stewardship across district hospitals, regional hospitals, tertiary hospitals, microbiology laboratories, infectious disease units, ICU settings, public health laboratories, and academic centres.

Why These Microbiology Research Topics Work for HPCSA Registrars

HPCSA microbiology registrar research must be feasible within the 4-year training programme while addressing clinically relevant questions in South African diagnostic microbiology, infectious disease, and antimicrobial stewardship practice. Each topic below has been selected for:

• Clinical relevance: Addresses real microbiological and infectious disease problems commonly encountered in South African hospitals, clinics, laboratories, and public health services
• Feasibility: Achievable using microbiology laboratory records, culture and sensitivity reports, GeneXpert data, blood culture registers, antimicrobial resistance surveillance data, infection control records, and clinical case files
• Ethical approval: Clear pathways for IRB submission, retrospective record review, anonymised laboratory data use, consent waiver where appropriate, and supervisor approval
• Publication potential: Suitable for South African Medical Journal, Southern African Journal of Infectious Diseases, African Journal of Laboratory Medicine, or international microbiology and infectious disease journals
• South African disease burden: Focuses on HIV, tuberculosis, antimicrobial resistance, bloodstream infections, urinary infections, healthcare-associated infections, fungal infections, STI diagnostics, and resource-appropriate laboratory diagnostics

Bacteriology, Antimicrobial Resistance and Culture-Based Research Topics

Topic 1: Antimicrobial Resistance Patterns in Urinary Isolates

Research Question: What are the common bacterial isolates and antimicrobial resistance patterns among patients with culture-positive urinary tract infections?

Study Design: Retrospective laboratory-based descriptive study

Setting: Microbiology laboratory serving outpatient clinics, emergency units, and inpatient wards

Why This Works: UTI is one of the most common bacterial infections, urine culture and sensitivity data are readily available, and the study can analyse E. coli, Klebsiella, Enterococcus, Proteus, ESBL production, multidrug resistance, inpatient versus outpatient patterns, and implications for empirical antibiotic guidelines.

Topic 2: ESBL-Producing Enterobacterales in Hospitalised Patients

Research Question: What is the prevalence and clinical distribution of extended-spectrum beta-lactamase-producing Enterobacterales among hospitalised patients?

Study Design: Retrospective laboratory surveillance study

Setting: Tertiary hospital microbiology laboratory

Why This Works: ESBL-producing organisms are major drivers of antimicrobial resistance, culture reports can identify specimen type, ward location, organism, resistance profile, carbapenem use, ICU association, and infection control implications.

Topic 3: Carbapenem-Resistant Gram-Negative Bacteria

Research Question: What are the trends, specimen sources, and resistance profiles of carbapenem-resistant Gram-negative bacterial isolates?

Study Design: Retrospective laboratory-based trend analysis

Setting: Microbiology laboratory and infection prevention unit

Why This Works: Carbapenem resistance is a critical public health threat, laboratory records can provide organism distribution, susceptibility profiles, ward clusters, ICU burden, specimen sources, and possible outbreak signals.

Topic 4: Blood Culture Positivity and Contamination Rates

Research Question: What are the blood culture positivity rates, pathogen profile, antimicrobial susceptibility patterns, and contamination rates in a tertiary hospital?

Study Design: Retrospective laboratory audit

Setting: Microbiology laboratory and hospital wards

Why This Works: Blood cultures guide sepsis management, laboratory data can identify true pathogens, contaminants, ward source, time to positivity, antimicrobial susceptibility, and sample collection quality improvement needs.

Topic 5: Staphylococcus aureus Bacteraemia: Resistance and Outcomes

Research Question: What are the antimicrobial resistance patterns and clinical outcomes among patients with Staphylococcus aureus bacteraemia?

Study Design: Retrospective cohort study

Setting: Microbiology laboratory, medical wards, ICU, and infectious disease service

Why This Works: Staphylococcus aureus bacteraemia is clinically serious, records can evaluate MRSA prevalence, source of infection, echocardiography use, antibiotic choice, repeat blood cultures, ICU admission, mortality, and duration of therapy.

Topic 6: Pseudomonas aeruginosa Resistance Patterns in ICU

Research Question: What are the antimicrobial susceptibility patterns of Pseudomonas aeruginosa isolates from intensive care units?

Study Design: Retrospective laboratory-based study

Setting: ICU and microbiology laboratory

Why This Works: Pseudomonas is an important ICU pathogen, laboratory data can assess respiratory, blood, urine, and wound isolates, resistance to antipseudomonal beta-lactams, carbapenems, aminoglycosides, fluoroquinolones, and implications for ICU empirical therapy.

Topic 7: Surgical Site Infection Microbiology and Antibiotic Susceptibility

Research Question: What are the common organisms and antimicrobial resistance patterns among culture-positive surgical site infections?

Study Design: Retrospective descriptive study

Setting: Surgical wards, theatre records, and microbiology laboratory

Why This Works: Surgical site infections increase morbidity and length of stay, wound swab and tissue culture data can be analysed, and findings can inform perioperative prophylaxis, infection control, and empirical antibiotic selection.

Topic 8: Paediatric Bloodstream Infections: Organism Profile and Resistance

Research Question: What are the common bacterial isolates and resistance patterns among children with culture-confirmed bloodstream infections?

Study Design: Retrospective laboratory-based study

Setting: Paediatric wards, neonatal unit, and microbiology laboratory

Why This Works: Paediatric sepsis is clinically important, data can be stratified by neonates, infants, and older children, and the study can evaluate Gram-negative sepsis, Staphylococcus aureus, coagulase-negative staphylococci, resistance patterns, and empirical antibiotic implications.

Topic 9: Culture Yield in Suspected Sepsis Before and After Antibiotics

Research Question: How does prior antibiotic exposure affect blood culture yield among patients investigated for suspected sepsis?

Study Design: Retrospective or prospective observational study

Setting: Emergency department, medical wards, ICU, and microbiology laboratory

Why This Works: Blood culture timing affects diagnostic yield, records can assess antibiotic administration time, sample collection time, culture positivity, pathogen detection, and opportunities for improving sepsis diagnostic pathways.

Topic 10: Laboratory Turnaround Time for Positive Blood Cultures

Research Question: What is the turnaround time from blood culture collection to organism identification and susceptibility reporting?

Study Design: Laboratory quality audit

Setting: Microbiology laboratory

Why This Works: Turnaround time affects antibiotic de-escalation and patient outcomes, laboratory information system timestamps can be used, and the study can assess collection-to-receipt time, incubation time, Gram stain reporting, identification, susceptibility testing, validation, and after-hours delays.

Tuberculosis, HIV, Mycology and Viral Infection Research Topics

Topic 11: GeneXpert Positivity and Rifampicin Resistance Patterns

Research Question: What are the positivity rates and rifampicin resistance patterns among samples tested by GeneXpert for suspected tuberculosis?

Study Design: Retrospective laboratory-based descriptive study

Setting: TB laboratory or molecular diagnostics unit

Why This Works: TB remains a major South African public health priority, GeneXpert records are usually available, and the study can evaluate specimen type, positivity rate, rifampicin resistance, age distribution, HIV clinic source, ward source, and referral patterns.

Topic 12: Diagnostic Yield of Sputum GeneXpert in Pulmonary TB Suspects

Research Question: What is the diagnostic yield of sputum GeneXpert among patients investigated for suspected pulmonary tuberculosis?

Study Design: Retrospective diagnostic audit

Setting: TB laboratory, outpatient department, and inpatient wards

Why This Works: GeneXpert is central to TB diagnosis, data can assess smear status where available, inpatient versus outpatient yield, repeat testing, rifampicin resistance, sample rejection, and positivity by age or HIV status.

Topic 13: Culture-Confirmed Tuberculosis and Drug Resistance Profile

Research Question: What are the culture positivity rates and first-line drug resistance patterns among Mycobacterium tuberculosis isolates?

Study Design: Retrospective TB laboratory surveillance study

Setting: Mycobacteriology laboratory

Why This Works: TB culture and drug susceptibility testing remain important for resistant TB detection, and the study can evaluate isoniazid resistance, rifampicin resistance, multidrug resistance, specimen type, and time to culture positivity.

Topic 14: Cryptococcal Antigen Positivity Among HIV-Positive Patients

Research Question: What is the prevalence of cryptococcal antigen positivity among HIV-positive patients and what factors are associated with positive results?

Study Design: Retrospective laboratory-based study

Setting: Microbiology laboratory, HIV clinic, and medical wards

Why This Works: Cryptococcal disease remains important in advanced HIV, CrAg testing data are available, and the study can assess CD4 count, ART status, inpatient versus outpatient testing, lumbar puncture findings, antifungal initiation, and mortality where records allow.

Topic 15: Candida Species Distribution and Antifungal Susceptibility

Research Question: What are the Candida species distribution and antifungal susceptibility patterns among clinically significant Candida isolates?

Study Design: Retrospective laboratory-based study

Setting: Microbiology or mycology laboratory

Why This Works: Candida infections are important in ICU, oncology, neonatal, and HIV settings, records can identify Candida albicans, non-albicans Candida, specimen source, fluconazole resistance, echinocandin susceptibility, ward distribution, and bloodstream infection burden.

Topic 16: Invasive Candidiasis in ICU Patients

Research Question: What are the risk factors, species profile, antifungal treatment patterns, and outcomes of invasive candidiasis in ICU patients?

Study Design: Retrospective cohort study

Setting: ICU and microbiology laboratory

Why This Works: Invasive candidiasis carries high mortality, clinical and laboratory records can assess central lines, broad-spectrum antibiotics, parenteral nutrition, surgery, renal replacement therapy, antifungal choice, source control, and outcome.

Topic 17: Dermatophyte Infections: Laboratory Profile and Species Distribution

Research Question: What are the common dermatophyte species identified among patients with suspected superficial fungal infections?

Study Design: Retrospective mycology laboratory study

Setting: Dermatology clinic and mycology laboratory

Why This Works: Dermatophyte infections are common, KOH and culture results can be reviewed, and the study can assess tinea corporis, tinea capitis, tinea pedis, onychomycosis, age distribution, HIV status, and culture positivity.

Topic 18: Respiratory Viral PCR Positivity in Hospitalised Patients

Research Question: What are the respiratory viral PCR positivity patterns among hospitalised patients with acute respiratory infection?

Study Design: Retrospective laboratory-based descriptive study

Setting: Molecular virology laboratory and hospital wards

Why This Works: Respiratory viruses cause major seasonal morbidity, PCR data can identify influenza, RSV, SARS-CoV-2, adenovirus, rhinovirus, and other viruses, with age distribution, ward source, ICU admission, and seasonal patterns.

Topic 19: HIV Viral Load Suppression and Laboratory Monitoring

Research Question: What proportion of patients undergoing HIV viral load testing have unsuppressed viral load and what testing patterns are observed?

Study Design: Retrospective laboratory-based study

Setting: Virology laboratory linked to ART clinics

Why This Works: Viral load monitoring is central to HIV programme success, laboratory data can analyse suppression rates, repeat testing, high viral load categories, clinic source, age distribution, and potential gaps in monitoring.

Topic 20: Hepatitis B and C Seropositivity Among Patients Tested in Hospital

Research Question: What are the seropositivity rates for hepatitis B and hepatitis C among patients tested in a hospital laboratory?

Study Design: Retrospective serology laboratory study

Setting: Serology or virology laboratory

Why This Works: Hepatitis testing is relevant for HIV care, antenatal care, dialysis, oncology, and occupational exposure, and the study can assess HBsAg positivity, anti-HCV positivity, clinic source, age, sex, and repeat testing patterns.

Hospital Infection, Diagnostic Stewardship and Laboratory Quality Research Topics

Topic 21: Hospital-Acquired Infections in Intensive Care Units

Research Question: What are the common healthcare-associated infections, causative organisms, and resistance patterns among ICU patients?

Study Design: Retrospective surveillance study

Setting: ICU, infection prevention unit, and microbiology laboratory

Why This Works: ICU patients are at high risk of healthcare-associated infection, records can assess ventilator-associated pneumonia, catheter-associated UTI, central line-associated bloodstream infection, surgical site infection, organism profile, resistance, device use, and outcomes.

Topic 22: Catheter-Associated Urinary Tract Infection Microbiology

Research Question: What are the microbiological profile and antimicrobial resistance patterns of catheter-associated urinary tract infections compared with non-catheter-associated UTIs?

Study Design: Comparative retrospective study

Setting: Microbiology laboratory and inpatient wards

Why This Works: CAUTI is common and preventable, urine culture data can be compared between catheterised and non-catheterised patients, and resistance patterns can guide empirical therapy and infection prevention measures.

Topic 23: Central Line-Associated Bloodstream Infection Surveillance

Research Question: What are the causative organisms and antimicrobial resistance patterns in central line-associated bloodstream infections?

Study Design: Retrospective surveillance study

Setting: ICU, oncology unit, neonatal unit, and microbiology laboratory

Why This Works: CLABSI is a major patient safety issue, culture records and infection control data can identify organism profile, line duration, ward clusters, MRSA, Gram-negative resistance, Candida infections, and outcomes.

Topic 24: Multidrug-Resistant Organism Colonisation in ICU Patients

Research Question: What is the prevalence of colonisation with multidrug-resistant organisms among ICU patients and what factors are associated with colonisation?

Study Design: Retrospective or prospective surveillance study

Setting: ICU and microbiology laboratory

Why This Works: MDRO colonisation can precede infection and outbreaks, screening swabs and culture data can assess carbapenem-resistant Enterobacterales, MRSA, VRE, prior antibiotic exposure, length of stay, device use, and infection control interventions.

Topic 25: Sample Rejection Rates in Microbiology Laboratory

Research Question: What are the common reasons for sample rejection in a microbiology laboratory and which clinical areas contribute most to rejected specimens?

Study Design: Laboratory quality audit

Setting: Microbiology laboratory

Why This Works: Pre-analytical errors affect patient care and antibiotic decisions, rejection logs can identify leaking containers, wrong specimen type, inadequate volume, duplicate samples, delayed transport, poor labelling, and department-specific training needs.

Topic 26: Appropriateness of Urine Culture Requests

Research Question: What proportion of urine culture requests meet clinical criteria for suspected urinary tract infection?

Study Design: Retrospective diagnostic stewardship audit

Setting: Emergency department, outpatient clinics, inpatient wards, and microbiology laboratory

Why This Works: Inappropriate urine cultures can lead to overtreatment of asymptomatic bacteriuria, request forms and clinical records can be reviewed for symptoms, pregnancy status, catheter use, pyuria, culture positivity, and antibiotic prescribing.

Topic 27: Appropriateness of Blood Culture Requests

Research Question: What proportion of blood culture requests are clinically appropriate and how does appropriateness relate to culture positivity?

Study Design: Retrospective diagnostic stewardship audit

Setting: Emergency department, inpatient wards, ICU, and microbiology laboratory

Why This Works: Blood cultures are critical but frequently overused or improperly collected, the study can assess indication, number of sets, timing before antibiotics, fever or sepsis criteria, contamination rate, and positivity yield.

Topic 28: Antimicrobial Stewardship and Antibiotic De-Escalation

Research Question: How often are antibiotics de-escalated after microbiology culture and susceptibility results become available?

Study Design: Retrospective audit

Setting: Microbiology laboratory, antimicrobial stewardship team, ICU, and inpatient wards

Why This Works: De-escalation is a key stewardship practice, records can identify empirical antibiotics, culture results, susceptibility reports, changes in therapy, documentation quality, broad-spectrum antibiotic duration, and clinical outcomes.

Topic 29: Outbreak Investigation of Multidrug-Resistant Organisms

Research Question: What were the microbiological, epidemiological, and infection control features of a multidrug-resistant organism cluster in a hospital unit?

Study Design: Retrospective outbreak investigation or case series

Setting: ICU, neonatal unit, surgical ward, or infection prevention service

Why This Works: MDRO outbreaks are highly relevant to hospital infection control, laboratory and ward records can assess organism type, resistance pattern, timeline, patient movement, screening, environmental cleaning, isolation measures, and outbreak control interventions.

Topic 30: Microbiology Critical Result Reporting and Communication

Research Question: How timely and complete is the communication of critical microbiology results to clinical teams?

Study Design: Retrospective laboratory quality audit

Setting: Microbiology laboratory

Why This Works: Critical result reporting affects patient safety and antimicrobial decisions, laboratory records can assess blood culture Gram stain notification, positive CSF results, CRE detection, time to clinician notification, documentation, after-hours reporting, and escalation procedures.

Getting Your HPCSA Research Protocol Generated

If you’ve selected a research topic from this list, the next step is developing a comprehensive research protocol that meets HPCSA requirements, gains supervisor approval, and successfully passes IRB review.

What a Complete Research Protocol Includes

• Title and Introduction: Clear research question and background
• Literature Review: Summary of current evidence with international journal references relevant to microbiology, infectious diseases, antimicrobial resistance, diagnostic stewardship, molecular diagnostics, infection prevention, and laboratory quality
• Methodology: Detailed study design, study population, sample sources, inclusion criteria, exclusion criteria, laboratory methods, organism identification methods, susceptibility testing standards, data collection procedures, and outcome measures
• Statistical Analysis: Sample size calculation, descriptive analysis, resistance pattern analysis, trend analysis, comparative statistics, diagnostic yield analysis, turnaround time analysis, regression analysis, or risk factor modelling where appropriate
• Ethical Considerations: IRB submission requirements, consent waiver where applicable, anonymisation of laboratory and patient data, confidentiality, secure handling of microbiology reports, and responsible reporting of outbreak or antimicrobial resistance data
• Timeline: Gantt chart with realistic milestones for 4-year registrar training
• Budget: Resource requirements and cost breakdown
• References: Vancouver or APA style citations

Journals for HPCSA Microbiology Research

South African Journals

• Southern African Journal of Infectious Diseases – Suitable for antimicrobial resistance, HIV, TB, stewardship, and infectious disease microbiology research
• African Journal of Laboratory Medicine – Suitable for diagnostic microbiology, laboratory quality, molecular diagnostics, turnaround time, and laboratory systems research
• South African Medical Journal (SAMJ) – Accepts microbiology, infectious disease, public health, antimicrobial resistance, and health systems research

International Journals

• Clinical Microbiology and Infection – High-quality clinical microbiology and infectious disease research
• Journal of Clinical Microbiology – Diagnostic microbiology, molecular testing, and laboratory-based studies
• Clinical Infectious Diseases – Infectious disease, antimicrobial resistance, and clinical microbiology research
• Journal of Antimicrobial Chemotherapy – Antimicrobial resistance and stewardship research
• Antimicrobial Resistance & Infection Control – AMR, healthcare-associated infection, and infection prevention research
• BMC Infectious Diseases – Broad infectious disease and microbiology research
• Diagnostic Microbiology and Infectious Disease – Diagnostic methods, organism profiles, and antimicrobial susceptibility studies

HPCSA Microbiology Registrar Research Requirements

All HPCSA microbiology registrars must complete a research project during their 4-year specialist training programme. The research protocol should be developed early in training, approved by a supervisor, submitted for institutional ethics review before data collection, and aligned with clinically relevant microbiology, infectious disease, laboratory medicine, and antimicrobial resistance priorities in South Africa.

Given South Africa’s microbiology priorities – including tuberculosis, HIV-related infections, antimicrobial resistance, bloodstream infections, urinary tract infections, healthcare-associated infections, fungal infections, STI diagnostics, outbreak control, infection prevention, and diagnostic stewardship – microbiology research topics should be practical, ethically sound, and relevant to real-world laboratory and clinical service delivery while maintaining strong academic and methodological standards.