The recent norovirus outbreak in Los Angeles (USA), linked to raw oysters from British Columbia, Canada, highlights the global health risks posed by this highly contagious virus.
Key Details of the Outbreak:
- Location: Los Angeles, USA.
- Affected Individuals: At least 80 people fell ill.
- Source: Raw oysters sourced from British Columbia, Canada, distributed across 14 US states before being recalled.
Norovirus Overview:
- Transmission:
- Contaminated food, water, and surfaces.
- Primary route: Oral-fecal.
- Symptoms:
- Acute onset diarrhea.
- Vomiting.
- Additional symptoms may include stomach pain, nausea, and fatigue.
- Vulnerability:
- Affects all age groups.
- Common in closed environments like:
- Cruise ships.
- Nursing homes.
- Dormitories.
- Global Perspective:
- WHO: Norovirus is the leading cause of acute gastroenteritis globally.
- Associated with intestinal inflammation, malnutrition, and long-term morbidity.
- Reinfection Risk:
- Numerous norovirus types exist, meaning infection with one type does not confer immunity to others.
Outbreak in India
- Previous Incidents: Reported outbreaks in Kerala, though on a smaller scale compared to the US.
- Preventive Measures: Importance of improved hygiene and sanitation.
Preventive Measures:
- Food Safety:
- Avoid raw or undercooked shellfish.
- Ensure thorough washing of fruits and vegetables.
- Personal Hygiene:
- Wash hands regularly with soap, especially after using the restroom and before handling food.
- Environmental Hygiene:
- Disinfect contaminated surfaces with bleach-based cleaners.
- Proper disposal of vomit and fecal matter.
