text: Zika<unk>  may be detected in<unk>  for a short period of time. Although rare, reports of Zika<unk>  transmission via<unk>  transfusions have been described. The risk of Zika<unk>  infection in the continental USA due to<unk>  transfusion is extremely low. The U.S. Food and Drug Administration (FDA), the Red Cross, and the British National Health Service<unk>  and Transplant Agency announced that individuals who traveled to Zika-affected regions would be ineligible to donate<unk>  for at least 28 days. The Canadian<unk>  Agency announced that individuals who traveled to Zika-affected regions would be ineligible to donate<unk>  for at least 3 weeks (21 days).
option_0: Zika virus infection blood donation
option_1: Zika virus infection travel notice
option_2: Hepatitis B vertical transmission
option_3: Marburg hemorrhagic fever laboratory findings
option_4: Hantavirus infection physical examination
option_5: Marburg hemorrhagic fever physical examination
option_6: Lassa fever laboratory findings
option_7: Marburg hemorrhagic fever diagnostic criteria