** Shares of SIGA Technologies Inc SIGA.O up 6.2% at
$14.33
** National Institutes of Health says it has started
enrolling patients with monkeypox in a late-stage trial to test
SIGA's antiviral pill, Tpoxx urn:newsml:reuters.com:*:nL4N30G2SX
** Trial to enroll more than 500 patients, including both
adults and children, to test the drug against monkeypox
** Oral and intravenous formulations of Tpoxx are already
approved by U.S. FDA for treating smallpox
** Including session gains, SIGA shares have nearly doubled
this year
(Reporting by Raghav Mahobe)
((Raghav.Mahobe@thomsonreuters.com;))