Look at the CDC website http://wwwnc.cdc.gov/travel/destinations/traveler/none/rwanda
for all you should be up to date on for Rwanda. Find a local travel clinic to advise you on what you need, based on your immunization history and health needs. Do this as soon as you can, as some immunizations and medications need to be taken a month in advance. Yellow Fever Vaccination is required for entry into Rwanda. You will need a yellow vaccination card from your doctor.