Polhena, Heeralugedara, Kalugalla, Aswennawaththa East Grama Seva Divisions in Gampaha District & Miriswaththa, Pelawattte North, Pelawatte East in Kalutara District will be isolated from 8pm today, Army Commander Gen. Shavendra Silva said.He also said the Damnulla economic centre would be closed for two weeks.