Table 1.

Overview of most relevant events

Date	Donor/Recipient	Event
August 2005	Donor	Visit to Kenya, Tanzania and Zanzibar
3 April 2006	Donor	First visit to blood bank for examination and giving blood samples for testing
4 May 2006	Donor	Blood donation #1
2 August 2006	Donor	Blood donation #2
Aug – Sept 2006	Donor	Visit to Thailand (only to low risk areas for malaria, no precautions required)
9 November 2006	Donor	Blood donation #3
27 February 2007	Donor	Blood donation #4 at a thrombocyte count of 141 × 109/L
22 May 2007	Donor	Blood donation #5 at a thrombocyte count of 94 × 109/L
29 May 2007	Donor	Informed about thrombocytopenia; referred to GP
14 August 2007	Donor	Blood donation #6
September 2007	Donor	Visit to Costa Rica
26 May 2008	Donor	Blood donation #7
25 August 2008	Donor	Blood donation #8
17 November 2008	Donor	Blood donation #9
11 February 2009	Donor	Blood donation #10
8 June 2009	Donor	Blood donation #11
3 December 2009	Donor	Blood donation #12
1 March 2010	Donor	Blood donation #13
10 May 2010	Donor	Blood donation #14
9 February 2011	Donor	Blood donation #15
14 February 2011	Recipient	Coronary-artery bypass surgery and transfusion of red blood cell concentrate from blood donation #15
14 April 2011	Recipient	Diagnosis P. malariae infection
14 April 2011	Donor	Informed about post-transfusion malaria infection in recipient
7 June 2011	Donor	Blood collection for malaria tests
23 June 2011	Donor	First laboratory evidence for subclinical P. malariae infection in specimen collected on 7 June 2011
17 August 2011	Donor	First visit to Harbour hospital and initial examination
8 November 2011	Donor	Second visit to Harbour hospital; confirmation of on-going, subclinical P. malariae infection
10 November 2011	Donor	Start oral chloroquine treatment