The outbreak of COVID-19 raised numerous questions on the interactions between the occurrence of new infections, the environment, climate and health. The European Union requested the H2020 HERA project which aims at setting priorities in research on environment, climate and health, to identify relevant research needs regarding Covid-19. The emergence and spread of SARS-CoV-2 appears to be related to urbanization, habitat destruction, live animal trade, intensive livestock farming and global travel. The contribution of climate and air pollution requires additional studies. Importantly, the severity of COVID-19 depends on the interactions between the viral infection, ageing and chronic diseases such as metabolic, respiratory and cardiovascular diseases and obesity which are themselves influenced by environmental stressors. The mechanisms of these interactions deserve additional scrutiny. Both the pandemic and the social response to the disease have elicited an array of behavioural and societal changes that may remain long after the pandemic and that may have long term health effects including on mental health. Recovery plans are currently being discussed or implemented and the environmental and health impacts of those plans are not clearly foreseen. Clearly, COVID-19 will have a long-lasting impact on the environmental health field and will open new research perspectives and policy needs.

COVID-19 的爆发对新感染的发生、环境、气候和健康之间的相互作用提出了许多问题。欧盟要求 H2020 HERA 项目旨在确定环境、气候和健康研究的优先事项，以确定有关 Covid-19 的相关研究需求。SARS-CoV-2 的出现和传播似乎与城市化、栖息地破坏、活体动物贸易、集约化畜牧业和全球旅行有关。气候和空气污染的贡献需要更多的研究。重要的是，COVID-19 的严重程度取决于病毒感染、衰老和慢性疾病之间的相互作用，例如代谢、呼吸和心血管疾病以及肥胖症，这些疾病本身就受到环境压力的影响。这些相互作用的机制值得进一步审查。大流行和对该疾病的社会反应都引发了一系列行为和社会变化，这些变化可能在大流行后很长时间内仍然存在，并且可能对包括心理健康在内的健康产生长期影响。目前正在讨论或实施恢复计划，尚未明确预见这些计划对环境和健康的影响。显然，COVID-19 将对环境健康领域产生长期影响，并将开辟新的研究视角和政策需求。目前正在讨论或实施恢复计划，尚未明确预见这些计划对环境和健康的影响。显然，COVID-19 将对环境健康领域产生长期影响，并将开辟新的研究视角和政策需求。目前正在讨论或实施恢复计划，尚未明确预见这些计划对环境和健康的影响。显然，COVID-19 将对环境健康领域产生长期影响，并将开辟新的研究视角和政策需求。