Eight cases were due to infection acquired from a health facility, 12 from direct contact with camels, and three are still under investigation
The Kennedy Center also said in a statement the White House reception "will no longer take place"
Top-seeded Spaniard Rafael Nadal defeated fellow countryman Albert Ramos-Vinolas in straight sets on Friday to set up a mouth-watering quarter-final against Australian Nick Kyrgios.
Facebook Inc founder Mark Zuckerberg said he would be taking two months of paternity leave after the birth of his second daughter.
Usain Bolt delivered a rebuke to those who questioned whether he really suffered an injury in his farewell race at the World Athletics Championships by revealing details of his hamstring tear
A British study into smoking and e-cigarette use among UK teenagers has produced mixed results, prompting scientists to caution against altering policy decisions or public health advice until evidence becomes clearer.