The ongoing pandemic of 2019 novel coronavirus disease (COVID-19) is challenging global public health response system. We aim to identify the risk factors for the transmission of COVID-19 using data on mainland China. We estimated attack rate (AR) at county level. Logistic regression was used to explore the role of transportation in the nationwide spread. Generalized additive model and stratified linear mixed-effects model were developed to identify the effects of multiple meteorological factors on local transmission. The ARs in affected counties ranged from 0.6 to 9750.4 per million persons, with a median of 8.8. The counties being intersected by railways, freeways, national highways or having airports had significantly higher risk for COVID-19 with adjusted odds ratios (ORs) of 1.40 (p = 0.001), 2.07 (p < 0.001), 1.31 (p = 0.04), and 1.70 (p < 0.001), respectively. The higher AR of COVID-19 was significantly associated with lower average temperature, moderate cumulative precipitation and higher wind speed. Significant pairwise interactions were found among above three meteorological factors with higher risk of COVID-19 under low temperature and moderate precipitation. Warm areas can also be in higher risk of the disease with the increasing wind speed. In conclusion, transportation and meteorological factors may play important roles in the transmission of COVID-19 in mainland China, and could be integrated in consideration by public health alarm systems to better prevent the disease.

This qualitative research using the focus group approach has gathered pertinent perceptions from the stakeholders in Chinese elderly care environment, including community-based and institutionalised elderly, medical providers, administrators and governmental officials. The study found that the elderly are willing to live in nursing homes when they are not in good physical condition and are dependent on others for their activities of daily living. The utilisation of nursing home care has gained acceptance in the community as more elders recognise its advantages. The elderly study subjects expressed interest in the service environment, as well as the cultural and recreational activities in nursing homes. Most participants were satisfied with the quality of nursing care. Administrators and providers in the nursing homes agreed that skilled nursing facilities appear to be more competitive because they require more licensed providers and other professional staff members. A majority of nursing homes face serious financial difficulties.

The injury medical waste is the most serious infectious, which serious impact on human health and environmental issues. There are many hidden dangers in the injury medical waste processing, particularly in small and medium-sized hospitals. The current situation, classify and hazard are analysed, as well as problems and difficulties in injury medical waste disposal. The disposal mechods and countermeasures are put forward to dispose the injury medical waste for small and medium-sized hospitals. The research has certain practical significance for injury medical waste disposal.