About Microbeonline.com
Microbeonline.com is an online guidebook on Microbiology, precisely speaking, Medical Microbiology. This blog shares information and resources about pathogenic bacteria, viruses, fungi, and parasites.
Where Microbiology Clicks
A microbiology exam is not just a test of memory. It is a test of whether you can stand at a bedside, look at a culture report, and make a decision that matters.
That is the gap Microbeonline was built to close.
The Story Behind This Site
Every teacher has a moment when they realise textbooks are not enough.
For me, it happened in the microbiology laboratory at Patan Academy of Health Sciences (PAHS) in Nepal. A student stared at a positive catalase test, then a positive coagulase test, and froze. She knew both results individually. She had memorised the facts. But she could not yet see what those two results together were telling her: this is Staphylococcus aureus, and your patient may be heading toward a bacteraemia.
The knowledge was there. The connection was not.
I started Microbeonline.com to build that connection, one article at a time.
Who I Am
I am Tankeshwar Acharya, an Assistant Professor of Microbiology at Patan Academy of Health Sciences (PAHS), Lalitpur, Nepal.
My clinical and academic work sits at the intersection of diagnostic microbiology, antimicrobial resistance, and medical education. I have worked with students preparing for MBBS finals, BSc Nursing qualifying exams, MSc Microbiology dissertations, and laboratory professionals navigating resource-limited diagnostic settings across Nepal and South Asia.
I believe that good microbiology education does not just produce students who pass exams. It produces clinicians and laboratory scientists who catch infections earlier, interpret results more confidently, and choose antibiotics more wisely. That belief is the foundation of everything on this site.
Who This Site Is For
Microbeonline is written for:
MBBS students who need to move beyond rote memorisation and understand the why behind every organism, every test, and every treatment decision.
BSc Nursing/Bachelor in Nursing students who encounter microbiology in clinical practice and need practical, reliable reference material they can trust.
MSc/MD Microbiology students who want depth: mechanisms, clinical reasoning, and the kind of nuance that written and viva examinations reward.
Laboratory professionals working in district hospitals, public health labs, and resource-limited settings, where a well-understood SOP can be the difference between a correct report and a missed diagnosis.
If you have ever read a microbiology textbook chapter and thought, I understand the words but I still cannot answer the question, this site was built for you.
How We Teach Here
Every article on Microbeonline is structured around three questions:
What? The facts: the organism, the test, the result, the mechanism. Accurate, complete, and examination-ready.
Why? The clinical application: why this matters to a real patient, what happens if you miss it, how the biology drives the disease. This is where facts become understanding.
How to Remember? The hook: a mnemonic, an analogy, a clinical story that makes the fact stick. Not a one-line trick, but a genuine memory device that connects back to the science.
You will also find, across the site, a particular emphasis on the moments students find most confusing: the procedural steps where errors happen, the interpretation rules that look simple but hide important nuance, the look-alike organisms that cause exam mistakes and, more importantly, diagnostic mistakes in real laboratories.
What You Will Find Here
Bacteriology — Organism profiles built around pathogenesis, not just a list of characteristics. Colony morphology tables written for the bench, not just for examinations. Virulence mechanisms explained through the logic of infection, not isolated bullet points.
Clinical Microbiology Laboratory — Culture media, biochemical tests, staining methods, antimicrobial susceptibility testing. Every major procedure is covered with attention to what goes wrong and why.
Mycology and Virology — Fungal identification, antifungal mechanisms, viral diagnostics. Content built to support both the theory paper and the practical.
Antimicrobial Resistance — One of the most important topics in modern medicine and one of the most poorly taught. Microbeonline covers resistance mechanisms, MIC interpretation, breakpoints, and the clinical consequences of getting it wrong.
A Note on Resource-Limited Settings
A significant portion of Microbeonline's readership works in laboratories where reagents are limited, equipment is basic, and guidelines must be adapted to what is actually available. This site takes that seriously. Where alternative approaches or low-resource interpretations exist, we include them. The goal is not to describe the ideal laboratory. It is to describe the real one, and to help the people working in it do excellent science.
The People Behind the Articles
The site is written primarily by me, with contributions from trusted colleagues in clinical microbiology and medical education. Every article is reviewed for factual accuracy against current guidelines, including CLSI standards, WHO recommendations, and peer-reviewed literature. Where my own published research is relevant, it is cited directly.
The technical infrastructure of Microbeonline is managed by my brother, who handles CMS development and implementation.
A Commitment to Depth
There are many microbiology sites. Most summarise what a textbook already says.
Microbeonline is built on a different conviction: that a student who understands why Streptococcus pneumoniae autolysis in bile will never confuse the bile solubility test with any other test. That a laboratory scientist who understands how an ESBL defeats a beta-lactam will interpret a susceptibility report differently than one who has only memorised which disc to use.
Depth is not harder to learn. It is easier to remember, easier to apply, and far less likely to fail you when a patient is waiting.
That is what Microbeonline is here to provide.
Get in Touch
If you have a question about an article, a topic you want covered, or an error you have spotted, I want to hear from you. Microbeonline is a living resource and every correction, every gap identified, and every suggestion makes it more useful for the next student who arrives here at midnight before an exam.
You can reach me through the contact form on this site.
Microbeonline.com is an independent educational resource. It is not affiliated with any pharmaceutical company, diagnostic manufacturer, or commercial laboratory service. The content is written to support learning and should not replace clinical judgment or institutional protocols.