Ugh says the retired doctor who got the two-dose Pfizer vaccines in March and just found out this news regarding Delta Variant:

• Pfizer vaccines only effective against Delta at 42%.  Still seems to minimize severe illness, hospitalization, or death.  Other MDs who have gotten the Delta variant tended to have a rather bothersome illness for about 8 days.
• All it takes is less than 5 seconds to catch the darned variant, and the spreader, whether ill or infected without symptoms, tends to infect 8-10 other people.