Laboratory results on tissues of a British man who died in his room in Phuket after returning from Nigeria showed no signs of the deadly Ebola disease.
Dr Thiravat Hemachudha, director of the WHO Collaborating Centre for Research and Training on Viral Zoonoses, said yesterday that separate tissue tests by German and Chinese appliance equipment confirmed the results.
But the result is still in doubt as WHO's standards require a test of the suspect's blood.
"However, the foreigner was already dead for a few days so we are not sure about the result. I will consult with the Disease Control Department and virology experts on the matter," he said.
The British man arrived in Phuket from Lagos early this month while the country was declared free of the virus last week.