The Guggenheim Museum was among a number of Manhattan buildings that recently tested positive for the bacteria that causes Legionnaires’ disease amid the city’s latest outbreak. The city health department on Friday released a list of 31 buildings ordered to clean and disinfect their cooling towers. The striking, cylindrical art museum was among 19 that have already completed the remediation, according to the department’s list. The rest were expected to complete the work by Saturday. More than 50 people have been sickened in the Upper East Side outbreak, but none have died. Seven people died during an outbreak last year in Manhattan.