Risk Assessment and Management for Potential Kidney Donors with P. vivax Malaria Exposure

Risk of P. vivax Malaria in Potential Kidney Donors

P. vivax can cause relapsing malaria due to persistent liver stages (hypnozoites) that can remain dormant for up to 4 years after leaving endemic areas, even with appropriate prophylaxis, as recommended by the Centers for Disease Control and Prevention (CDC) 1, 2

Malaria parasites can be transmitted through organ donation, posing a significant risk to immunosuppressed transplant recipients, according to the National Kidney Foundation 3
Kidney transplant recipients are particularly vulnerable due to immunosuppressive medications that reduce their ability to control parasitic infections, as stated by the Infectious Diseases Society of America 3, 4

Despite appropriate Malarone prophylaxis, potential kidney donors who have traveled to P. vivax endemic areas should wait at least 4 weeks after leaving the endemic area before donation, as recommended by the CDC 2

Consider screening potential donors with thick and thin blood smears and/or malaria-specific PCR testing before donation, especially if they've been in high-risk areas, as suggested by the CDC 1
For donors with any post-travel fever or symptoms suggestive of malaria, donation should be deferred until malaria is definitively ruled out, according to the CDC 1
If donation must proceed urgently, consider administering primaquine to the donor (after G6PD testing) to eliminate potential liver-stage parasites, as recommended by the World Health Organization (WHO) 2

The risk of P. vivax transmission varies based on the endemic region visited, with higher risks in certain parts of Asia and South America, as reported by the WHO 1