A 1990 study investigated violent behavior among severely mentally ill individuals in 1,401 randomly selected families who were members of the National Alliance for the Mentally Ill (NAMI). In the preceding year, 11 percent of these individuals were reported to have physically harmed another person.
You can donate after you have finished a course of oral antibiotics for a bacterial or viral infection as long as you have taken the last pill as of the date of donation. If you received an antibiotic by injection, you can donate as long as it has been 10 days since your last injection.
You can donate platelets once in a seven-day period and up to 24 times a year. You must wait at least 72 hours after donating platelets before donating whole blood. After an automated double red cell collection, you must wait 112 days before donating again.