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Monkeypox is a zoonotic disease caused by Monkeypox virus, which can cause the change of smallpox pattern in human. Monkeypox has been epidemic in central and west African countries, and infections outside the African continent are rare. Since May 2022, unprecedented outbreaks of human monkeypox and clusters of cases have occurred in non-epidemic countries such as Europe, the Americas and Australia, with multi-country outbreaks drawing global attention. The prevalence, transmission route and reoccurrence of monkeypox are still unknown. In view of the rapid increase of monkeypox cases, this paper reviewed the epidemiological changes, outbreak causes, clinical characteristics, and treatment methods of monkeypox, so as to clarify the epidemic background and transmission characteristics, improve the understanding of the disease, prevent the disease as soon as possible and formulate diagnosis and treatment measures.猴痘是由猴痘病毒引起的人畜共患性疾病，在人类中可导致类天花样改变。猴痘一直在中非和西非国家流行，非洲大陆以外地区感染患者很少见。2022年5月以来，欧洲、美洲和澳大利亚等国家暴发了前所未有的人类猴痘病例和聚集性病例，多国的暴发引起了全球关注。目前对猴痘的流行程度、传播途径及再现原因尚不清楚。针对于猴痘病例的快速上升，本文就猴痘的流行病学变化、暴发原因、临床特征及治疗手段进行综述，以明确流行背景及传播特点，提高对疾病的认识，为尽早予以预防以及制定诊治措施提供帮助。.

The void growth during tensile straining was studied in spheroidized carbon steels. The results showed that the longitudinal length of voids varies linearly with strain until a critical size for fracture is reached. The rate GL of void growth was found to be proportional to λ − 3 2 (where λ is the mean free path). On the basis of these observations, an explanation of the ductility achievable in a specimen was given to show the effects of microstructure on the void growth.