The results indicate that PTSD remained at an elevated level among elderly Qiang citizens in the heavily damaged area 3 years after the Wenchuan earthquake. Effective and sustainable mental health services are needed and should be directed particularly to the elderly Qiang citizens who are among the groups most vulnerable to the direct impact of the earthquake.
To study rumor spreading, a novel rumor spreading model with latent, constant recruitment, and varying total population is investigated. We carry out a global qualitative analysis of the rumor spreading model with latent, constant recruitment, and varying total population and studied the existence and stability of the rumor-elimination and prevailing equilibria and the impact different management strategies have on the rumor spreading process. The Runge-Kutta method is used for numerical simulation, and the simulation results imply that increasing the efforts to crack down on rumor spreaders, the timely disclosure of transparent information, the popularization of scientific knowledge, and the improvement of the ignorants' discrimination may be effective rumor control measures.
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