21st Blood Doning session

Attended a blood doning session this afternoon to make my 21st contribution only to be turned away due to having visited India in May. Apparently India is a malaria risk country so they don't want my blood, even though at the time of the visit I was told Bangalore was low risk and I didn't need to take anti-malarials. Might have been nice if they'd warned me about that before having me sit in their waiting room for best part of an hour despite having made an appointment for my donation.