Effect Analysis of "Four-Step" Training and Assessment Tool in the Prevention and Control of COVID-19.

Purpose: To improve the ability of infection prevention and control (IPC) of medical staff during the COVID-19 epidemic period, the "four-step" mode of whole staff training and assessment was used. Methods: During the period from March 9 to March 18, 2020, 5425 medical staff from The First Affiliated Hospital of Nanjing Medical University were selected as the objects of this study. There are four stages in the training assessment mode. The first stage is the basic assessment stage; the second stage releases the electronic version of the knowledge point manual; the third stage conducts online exercises; the fourth stage conducts the final assessment. Results: In the first stage, the participation rate of medical staff was 95.04%. In the fourth stage, the participation rate of medical staff was 98.01%. The average score of female medical staff in the first stage and the fourth stage was higher than that of males (P< 0.001). The average score of medical staff under 30 years old in the first stage and the fourth stage was higher than that of other age groups (P< 0.05). In the fourth stage, the correct rate of each part of exercises in the knowledge points of IPC was higher than that in the first stage (P< 0.001). In the two stages, the two parts of "COVID-19 prevention and control" and "multi-drug resistant bacteria prevention and control" had the highest accuracy, while the "disinfection and sterilization" and "infectious disease management" had the lowest accuracy (P< 0.001). Conclusion: The "four-step" infection control training assessment mode has realized "full participation" and "effective training", and the level of medical staff's IPC has been significantly improved.

Three types of massive screening for body temperature during prevention and control of COVID-19

OBJECTIVE: To study three different large-scale body temperature screening methods during the prevention and control period of COVID-19, so as to select appropriate body temperature screening methods for medical institutions. METHODS: Body temperatures of 874 pre-diagnosed patients was screened by infrared thermography, frontal thermography (forehead measurement) and aural thermography. Each patient was measured once independently by three methods, and gender and body temperature were recorded. The screening effect of three methods on fever patients with different genders and at different environment temperatures were analyzed. RESULTS: The average body temperatures detected by thermal imager, ear thermometer and frontal thermometer were as the following: ear thermometer> frontal thermometer > thermal imager. The coefficient of variation was frontal thermometer (1.359%) > ear thermometer(1.186%) > thermal imager (1.090%). The difference between the three methods was significant (P < 0.001). When ear thermometer and frontal thermometer were used to screen body temperature, the body temperature of male was higher than that of female, and the difference was significant (P<0.001). Among the three methods of temperature measurement, the average body temperature of group C (outdoor temperature 6-19 degrees C) was significantly higher than that of group A(outdoor temperature 1-6 degrees C) and group B (outdoor temperature 1-10 degrees C). The difference was statistically significant (P < 0.001). Ten suspected febrile patients were screened by thermal imager, but no suspected febrile patients were detected by frontal thermometer and ear thermometer, and the difference was significant (P < 0.05). CONCLUSION: The thermal imager has higher stability and accuracy and less affected by sex and outdoor temperature, and it should be used in large-scale body temperature screening for febrile patients.