Coronavirus has mutated into two strains dubbed ‘L’ and ‘S’-the S-type seems milder and less infectious, while the L-type emerged later, spreads quickly, is more aggressive and currently accounts for around 70% of cases. A patient can have both at once. https://t.co/Kwf4eeUtvy

— Amee Vanderpool (@girlsreallyrule) March 4, 2020