Case report: severe mosquito bite allergy as a symptom of relapsed adult chronic active Epstein-Barr virus disease and its poor prognosisLian Liu1,2†, Sida Peng1,3†, Zhanwu Lv4, Danyun Yuan1,2, Boyun Shi1,2, Chenrui Zhuo1,2, Wenhui Gu1,2, Zhenqian Huang1,3 *and Huo Tan1,2 *1 Guangzhou Medical University, Guangzhou, 511436, China2 Department of Hematology, Laboratory of Biological Targeting Diagnosis, Therapy and Rehabilitation of Guangdong Higher Education Institutes, The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou,510700, China3 Department of Hematology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou,510120, China4 Guangzhou Jinyu Medical Testing Center Co., Ltd, Guangzhou,510005, ChinaLian Liu1,2† and Sida Peng1,3†These authors contributed equally to this work and share first authorship