Sifakas Duke Lemur Center (IMAGE) Duke University Caption Coquerel's sifakas, like this mother-baby pair, are the only lemur species out of 17 at the Duke Lemur Center to fall prey to <i>Cryptosporidium</i>, a waterborne illness that causes weakness and diarrhea. Young sifakas are more likely to get sick, but if researchers can figure out how older animals manage to fight the infection, they might be able to develop vaccines that provide infants the same protection. Credit David Haring, Duke Lemur Center Usage Restrictions Please credit: David Haring, Duke Lemur Center License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.