COVID-19 may be as high as one in 55,000 cases, Canada’s vaccine advisory committee says — nearly twice the rate previously thought.In updated guidance published Friday, the National Advisory Committee on Immunization (NACI) said the current rate of vaccine-induced immune thrombotic thrombocytopenia, or VITT, as of May 12 is close to one in 83,000 doses administered.However, the committee said the rate could be higher “as investigations continue” into the condition, which has been linked to the AstraZeneca vaccine.The NACI has previously said that the rate of VITT is closer to one in 100,000.
A look at what we know about VITT, the rare blood clotting disorder The committee also notes that blood clots related to VITT “can be very.