L.A. County urges indoor mask wearing as Delta variant spreads - Los Angeles Times

1. L.A. County urges indoor mask wearing as Delta variant spreads  Los Angeles Times
2. The Delta variant will cause 'very dense outbreaks' in these five states, expert says  CNN
3. Are Chinese Covid-19 shots effective against the Delta variant?  Bangkok Post
4. mRNA vaccine immunity could last for years  Popular Science
5. Delta variant is forcing officials to rethink Covid-19 measures, even for the vaccinated  CNN
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