As the outbreak worsened in January and officials in Wuhan imposed a lockdown, Lin Wenhua, a freelance videographer in the city, pivoted from producing advertisements to using his camera to document the crisis.
Mr. Lin, 38, posted videos of his conversations with doctors and nurses who described not having time to rest, and with homeless workers displaced by the epidemic.
Li Zehua, a former host on China Central Television, the state broadcast agency, traveled to Wuhan to cover the outbreak as a citizen journalist, interviewing stranded migrant workers and crematory workers.
In his last video, Mr. Li, 25, urged his peers to learn more about China’s history.
“I hope more young people can stand up!”Mr. Li has not been heard from since, nor has Chen Qiushi, another young citizen journalist in Wuhan.