General Shavendra Silva, Head of the NOCPCO, Chief of Defence Staff and Commander of the Army during one more meeting session of medical experts in the NOCPCO Task Force yesterday (30) at Rajagiriya explained the reasons that led to the prolonged imposition of the prevailing travel restrictions by HE the President up until 7th June, Ongoing Vaccination Procedures and the need to sustain this restriction for better achievements in future.