The phrase "are already participating" is correct and usable in written English.
It can be used to indicate that individuals or groups are currently involved in an activity or event.
Example: "Many students are already participating in the after-school program, which has seen a significant increase in enrollment this year."
Alternatives: "are currently taking part" or "are actively involved".
8,000 hotels are already participating and earning green badges on the popular travel review site.
Another 700 to 800 buildings are not eligible, generally because they are already participating in other tax abatement programs.
Officers told protesters over loudspeakers: "You are already participating in an illegal assembly, right now the police order you all to immediately disperse".
More than 300 small banks are already participating in the federal program, although in recent months a growing number has sought to withdraw because of stringent requirements.
Loayza says one of the programme's goals is to motivate more women to participate in politics by showing them the meaningful involvement of those who are already participating.
According to the Times story, 93,000 Americans and US residents are already participating in the registered traveller programme, which can cost as little as $100 per year.
Reasons for refusing participation included: hospital was already participating in other research projects, lack of time or excessive workload, too few staff members to recruit participants, or insufficient number of patients who met the inclusion criteria.
Any of the following will be considered as a deviation from the protocol: randomization of an ineligible patient, enrollment of a patient that is already participating in an another study, enrollment of an participant to this study in another study, a patient receiving the wrong treatment, loss of radiology or any other data, and informed consent violations.
Any of the following will be considered as a deviation from the protocol: randomization of an ineligible patient, enrollment of a patient that is already participating in an another study, enrollment of an PROCON participant in another study, a patient receiving the wrong treatment, loss of radiology or any other data, and informed consent violations.
Participants 322 healthy adults (241 women; 81 men) aged 18-67 werewere already participating in the vitamin D and acute respiratory infections study (VIDARIS) between February 2010 and November 2011.
Mr. Cetto said Texas Instruments was already participating in tests in Berlin, Helsinki, Finland and Pittsburgh, that have shown that disruption can be overcome.
