The WHO on Saturday urged countries to be vigilant over the spread of a potentially fatal SARS-like virus after a new case in Britain brought the global number to 12.
“Based on the current situation and available information, WHO encourages all Member States to continue their surveillance for severe acute respiratory infections (SARI) and to carefully review any unusual patterns,” the UN health agency said in a statement.
On Friday, British health authorities said that a third member of a family had been diagnosed with so-called novel coronavirus, but was not in danger.
“Although this new case offers further indications of person-to-person transmission, no sustained person-to-person transmission has been identified,” the WHO said.
“Testing for the new coronavirus should be considered in patients with unexplained pneumonias, or in patients with unexplained severe, progressive or complicated respiratory illness not responding to treatment,” it added.
Clusters of cases, and cases among health workers, should be thoroughly investigated wherever they occur, it underlined.
The British Health Protection Agency said the latest person to contract the virus was a relative of two other cases announced last week.
The first member of the family, who was confirmed on Monday as having the virus, had recently traveled to the Middle East and Pakistan. The two relatives had no recent travel history.
A total of 12 cases have been reported to the WHO, with five of them fatal — three in Saudi Arabia and two in Jordan.
Coronaviruses are to blame for most common colds, but can also cause SARS. A SARS epidemic killed more than 800 people when it swept out of China in 2003, sparking a major international health scare.