华兰疫苗：公司尚无预防尼帕病毒相关的疫苗产品

Group 1 - The company, Hualan Vaccine (301207.SZ), announced that its stock price has deviated by more than 30% over three consecutive trading days, indicating abnormal trading fluctuations [1] - The company operates in the human vaccine manufacturing industry, primarily producing a quadrivalent influenza virus vaccine, which is used to prevent influenza caused by the virus [1] - Currently, the company does not have any vaccine products for the prevention of Nipah virus [1]