📉 In both London and Sweden, case and death rates have plummeted.

Some research suggests that regions acquire partial herd immunity at 20% exposure. Earlier estimates had suggested up to 70% exposure would be needed. If true, this could be very good news https://t.co/sk2FMwAZmc pic.twitter.com/qZhYBP2aZr

— Bloomberg Opinion (@opinion) August 11, 2020