Radiation sterilization is one of the most successful applications of ionizing radiation technologies. This paper reviews research on virus inactivation by ionizing radiation, focusing on its use in virus control for food, blood products, and homologous or heterologous tissue repair materials, inactivated viral vaccine preparation, and high-risk virus-related laboratory sample preparation, and also puts forward some thoughts on the application of ionizing radiation technologies in the prevention and control of coronavirus disease 2019.

Objective To investigate the influencing factors of opioid analgesics need within 48 hours after arthroscopic rotator cuff repair.Methods Clinical data of 90 consecutive arthroscopic rotator cuff repairs by the same operator from March 2017 to July 2022 were retrospectively analyzed.The patients were divided into opioid group(62 patients)and control group(28 patients)according to whether they used opioid analgesics within 48 hours after surgery.The control group consisted of patients who did not use analgesics or who had good analgesic effects with conventional analgesic regimens(non-steroidal anti-inflammatory drugs or non-opioid central analgesics)after surgery,and the opioid group consisted of patients who required opioid analgesics as assessed by the surgeon or who need opioid analgesics because of inefficacy of conventional analgesic regimens.The following factors were selected as independent variables:gender,age(whether≥65 years old),duration of disease(whether≥4 weeks),body mass index(BMI)(whether≥25),occupation(whether employed),with or without a history of smoking and alcohol consumption,hypertension,diabetes,heart disease,and trauma,duration of surgery(whether≤180 min),number of torn tendons(whether≥2),number of screws(whether≥2),large nodular osteophyte,and whether there was moderate-to-severe impingement.Single factor analysis was used to screen the factors influencing the need for opioid analgesics within 48 hours after arthroscopic rotator cuff repair.Results The results of univariate analysis showed that among the above independent variables,only the number of torn tendons≥2 was the factor affecting the need for opioid analgesics within 48 hours after arthroscopic rotator cuff repair(OR = 5.263,P = 0.007).Conclusions Patients with rotator cuff tears with≥2 tendons had more severe pain within 48 hours after rotator cuff repair,requiring opioid analgesics.Focus should be placed on postoperative pain in such patients,and a diverse analgesic regimen should be used early.