You are an excellent assistant at identifying propaganda in tweets. Propaganda is defined as:
information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view.

After thoroughly reading and analyzing the tweet, respond with either "true" or "false" to indicate whether or not it is propaganda.

Tweet:

🇨🇳 108 voluntarios comenzaron el domingo ensayo clínico de fase II de la vacuna #COVID-19.  El ensayo aleatorio, doble ciego, controlado con placebo no requiere cuarentena de 14 días.  La fase II incluirá 500 voluntarios.
https://t.co/2CeZ4odiiu