Health Intelligence, deeply explained.
In-depth guides on infectious diseases, outbreak history, vaccine science, and how to protect yourself and your community.
What is Dengue Fever? Symptoms, Treatment & Prevention
Everything you need to know about dengue: from the Aedes mosquito vector and four viral serotypes, to warning signs of severe dengue haemorrhagic fever and the Qdenga vaccine.
How COVID-19 Variants Work: From Alpha to JN.1 and Beyond
A plain-language explanation of how SARS-CoV-2 mutates, why variants of concern emerge, what immune escape means, and how vaccines are updated to stay relevant.
Ebola: A History of Outbreaks From 1976 to the Present
From the twin outbreaks along the Ebola river in 1976 to the catastrophic 2014–2016 West Africa epidemic and beyond — the full chronicle of Ebola's deadly history.
Mpox in 2025: Clades, Vaccines, and the Global Response
Updated guide to mpox covering the difference between Clade I and Clade IIb, the 2022 global outbreak, the 2024 DRC emergency, JYNNEOS vaccination, and tecovirimat treatment.
How Viruses Spread Between Humans: Transmission Routes Explained
Airborne, droplet, fomite, fecal-oral, sexual, vector-borne, zoonotic — a comprehensive look at how different viruses move through populations and what R₀ really means.
A History of Pandemics: From the Black Death to COVID-19
Spanning 700 years of pandemic history — plague, cholera, influenza, HIV, SARS, Ebola and COVID-19 — and what lessons public health has learned (and sometimes failed to apply).
Zika Virus and Pregnancy: Risks, Congenital Syndrome & Travel Advice
Why Zika virus is especially dangerous during pregnancy, what Congenital Zika Syndrome means for foetal development, and updated travel guidance for pregnant women in 2025.
About this blog
VirusWatch Health Intelligence publishes in-depth, evidence-based guides on infectious diseases, outbreak history, vaccine science, and practical public health advice. All articles are researched using primary sources including WHO situation reports, CDC health notices, peer-reviewed epidemiology journals, and ECDC rapid risk assessments. No content is AI-generated without expert review.
Articles are updated when significant new data becomes available — particularly after WHO issues Situation Reports, Emergency Committee decisions, or Disease Outbreak News. The publication date shown reflects the most recent editorial review, not the original publish date. This blog is for general educational purposes and does not constitute medical advice.