自2018年8月3日农业农村部确认辽宁省首次爆发疫情以来，32个省/自治区/直辖市/特别行政区发现了 ASF。香港特区于 2023 年 11 月 7 日和 22 日在元朗流浮山发现 ASF 病例
最近，在十二月初，元朗新田一個持牌豬場證實爆發新一 次疫情，在 30 個樣本中，有 19 個對病毒測試呈陽性反應[ 參考資 料 4 、參考資料 5 ] 。在台湾省，兽医研究所在一名从另一岛国入境的旅客非法携带的香肠中检测到两种 ASF 病毒。据该研究所称，其中一种病毒是 2018 年以来在中国出现的基因 II 型 ASF 病毒；另一种病毒是首次从旅客携带的猪肉产品中检测到的低毒性基因 I 型病毒与常见基因 II 型病毒的基因重組[基因重組]产生的新病毒。
新病毒于 2022 年首次被证实，随后又在江苏、河南、内蒙古等地发现。论文*指出，实验表明，新病毒具有高致病性和高传播性，去除致病基因的疫苗无法抵御新型 ASF 病毒。2023 年（截至 12 月 15 日），边检共截获 1733 件肉类产品，其中 79.3%来自中国内地；这些产品的 ASF 病毒检出率（12.4%）高于 2021 年（9.9%）和 2022 年（11.8%）。
China: Since the Ministry of Agriculture and Rural Affairs (MARA) confirmed the first outbreak in Liaoning Province on 3 August 2018, ASF were detected in 32 provinces/autonomous regions/municipalities/special administrative region. Hong Kong SAR detected ASF cases in Lau Fau Shan, Yuen Long on 7 and 22 November 2023 [reference1, reference2 , reference3 ], and recently, in early December, a new outbreak was confirmed on a licensed pig farm in San Tin in Yuen Long where 19 out of 30 samples tested positive for the virus [reference4 , reference5 ]. In Taiwan Province, the Veterinary Research Institute detected two ASF viruses in sausages illegally brought by a passenger arriving from another Island. According to the institute, one of the viruses was the genotype II ASF virus which has been around in China since 2018; another was a new virus produced by a genetic reassortment [基因重組] of a low virulence genotype I virus with the common genotype II virus, detected for the first time from a pork product carried by travellers. The new virus was first confirmed in 2022, and subsequently discovered in Jiangsu, Henan, Inner Mongolia and other places. Experiments showed that the new virus is highly pathogenic and transmissible, and vaccines made by removing the virulence gene are unable to protect against the new ASF virus, referred to a paper*. During 2023 (as of 15 December), a total of 1,733 meat products were intercepted by the border control, of which 79.3% were from the mainland China; the detection rate of ASF virus from these products was higher this year (12.4%) than in 2021 (9.9%) and 2022 (11.8%)
