CLICK ON IMAGE TO ZOOM CLICK ON IMAGE TO ZOOM Mixing COVID Vaccine Brands Appears Safer, in some cases is Likely to Cause Side Effects. But not Severe. Using two different vaccines will provide greater effectiveness because they work in differently. CLICK ON IMAGE TO ZOOM CLICK ON IMAGE TO ZOOM CLICK ON IMAGE TO ZOOM Recommendations: Monitor Antigens with the help of Rapid Antigen Test Monitor Oxygen Saturation Level with the help of Oximeters