In the midst of the coronavirus pandemic, this article endeavors to offer expeditious insights into the impact of the global humanitarian crisis on the tourism industry from a consumer behavior perspective. To do so, this article employs the theory of crowding as an overarching theoretical lens, the coronavirus disease 2019 (COVID-19) as a context to represent a global humanitarian crisis, and the rapid review approach as a method to source maiden evidence. In doing so, this article sheds light on instances of undercrowding (undertourism) and overcrowding (overtourism) in tourism as a result of COVID-19, with interpretations enriched by agency theory and reactance theory—thereby resulting in the emergence of a new theory called the agency and reactance theory of crowding. The article concludes with pragmatic implications in light of the global humanitarian crisis.

中文翻译：

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走向拥挤的代理和反应理论：来自 COVID-19 和旅游业的见解

在冠状病毒大流行期间，本文力求从消费者行为的角度快速洞察全球人道主义危机对旅游业的影响。为此，本文将拥挤理论作为总体理论视角，将 2019 年冠状病毒病 (COVID-19) 作为背景来代表全球人道主义危机，并将快速审查方法作为获取首次证据的方法。在此过程中，本文阐明了由于 COVID-19 导致的旅游业人满为患（旅游不足）和过度拥挤（过度旅游）的实例，并通过代理理论和反应理论丰富了解释——从而导致了一种新理论的出现，称为拥挤的代理和反应理论. 鉴于全球人道主义危机，本文的结论具有实际意义。