I'm in the AZD1222 (AstraZeneca) trial, and for the next two years, I need to fill out an online symptom questionnaire every single week. They also draw blood

I'm in the AZD1222 (AstraZeneca) trial, and for the next two years, I need to fill out an online symptom questionnaire every single week. They also draw blood at the 6-month and 1-year mark, so presumably could test for antibodies.