8:15 a.m.: The Wall Street Journal’s Nicholas Zamiska reports. There is no evidence that the bird-flu virus in Indonesia has mutated to a form that is readily transmissible among humans, the WHO said, despite increasingly alarmed reports from Indonesian health officials. Clusters of the disease among Indonesians may well indicate human exposure to the same sick birds, the WHO said, rather than the transmission of the disease from human to human, an event scientists fear could spark a pandemic. “Should we be more worried? Not at this stage,” Sari P. Setiogi, a spokeswoman for the WHO in Jakarta, said in an interview, adding that as health care workers in the field become more aware of the disease, the number of reported cases may rise. More. See the WHO’s avian-flu page.