Three Infectious Viruses Pose Combined Threat to Hong Kong
AM730 · 1 SOURCESabout 1 hour ago5 MIN
Summary
Three infectious diseases are posing a simultaneous threat to Hong Kong this year, according to emergency medicine specialist Dr. Lam Chun-wa. The trio includes rat hepatitis E, the highly mutated BA.3.2 Omicron variant commonly called the cicada virus, and Ebola virus. Each pathogen presents distinct transmission pathways and treatment challenges, with certain strains lacking any effective medical countermeasures.
Key Points
- Rat Hepatitis E: This non-enveloped virus spreads through fecal-oral transmission when humans contact food, water, or objects contaminated by rat secretions
- Alcohol-based hand sanitizers are completely ineffective against rat hepatitis E; soap and water washing for at least 20 seconds or diluted bleach solution (1:99) are required for prevention
- The cicada virus (BA.3.2), an Omicron sub-variant, predominantly attacks infants whose immune systems remain underdeveloped; nasal swabs may yield false negatives, necessitating throat swabs or deep throat saliva samples instead
- Current LP.8.1 COVID-19 vaccines offer limited protection against transmission but still reduce severe illness risk; most patients recover naturally with antiviral medication or corticosteroids for severe cases
- The Bundibugyo strain of Ebola has no approved vaccine or特效藥; the overall fatality rate ranges from 30% to 50%, with transmission occurring through contact with bodily fluids or infected fruit bats and primates
Why It Matters
Hong Kong's dense urban environment creates ideal conditions for zoonotic disease transmission, as all three pathogens originate from animal hosts . The emergence of multiple infectious threats simultaneously highlights gaps in public health preparedness, particularly for diseases like rat hepatitis E where everyday preventive tools prove inadequate .
Hong Kong's dense urban environment creates ideal conditions for zoonotic disease transmission, as all three pathogens originate from animal hosts . The emergence of multiple infectious threats simultaneously highlights gaps in public health preparedness, particularly for diseases like rat hepatitis E where everyday preventive tools prove inadequate .