All the five have been kept in isolation and necessary treatment is being given, state's Director of Health Services K H Lakiang said.
Dr Natasha Sangma, who had recently returned from New Delhi, and two nurses of Shillong Civil Hospital who had come in contact with the two H1N1 patients admitted at the hospital, have been admitted with flu-like symptoms.
A 26-year-old youth, who returned from Bangalore and a girl, who had come from Vellore, also showed suspected flu-like symptoms.
"We are screening people having travel history to places where the flu is prevalent. We have sent the samples today to the laboratory at Dibrugarh in Assam," Lakiang said.