Today, Explained Surfaces vs. droplets vs. aerosols
Jul 7, 2020
José Luis Jimenez, a Chemistry professor at the University of Colorado Boulder, sheds light on the crucial distinction between aerosols and droplets in the context of COVID-19 transmission. He discusses the recent letter signed by 239 scientists urging the WHO to acknowledge airborne transmission. Jimenez highlights how aerosols can pose significant risks indoors, leading to outbreaks despite safety measures. He also reflects on the challenges scientists face in advocating for effective public health communication during the pandemic.
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Skagit Choir Outbreak
- The Skagit Choir event saw 52 infections despite following handwashing and distancing guidelines.
- This exemplifies airborne transmission, as individuals distanced from the initial infected person still fell ill.
Guangzhou Restaurant Outbreak
- In a Guangzhou restaurant with poor ventilation, a family from Wuhan spread COVID-19 to other diners.
- Security footage confirmed no direct contact, strongly suggesting aerosol transmission.
Minimizing Exposure
- Limit indoor activities, especially in crowded, poorly ventilated spaces with prolonged exposure.
- Wear masks, minimize time spent in public areas, and improve ventilation systems when possible.