In a tweet harris said she does not have any symptoms and grateful to be vaccinated and boosted. she tested positive after returning from california and is taking pfizer s drug as part of her treatment. contacts tracing is now underway to determine if others around her are infected. the white house says harris has not been near president joe biden, due to their recent travel schedules. drug maker, pfizer bion tech is asking the food and drug administration to clear booster shots for 5 to 11. they say a third vaccine dose raises omicron fighting antibodies by 36 time thins age group. they have yet to clear a vaccine for children under the age of five but efforts are underway to have a vaccine available in the coming months. it was a terrible tuesday for u.s. financial markets.