Knowledge, attitude, and practice survey regarding coronavirus disease 2019 among residents in Hunan Province. / æ¹–å—çœå± æ°‘2019å† çŠ¶ç— æ¯’ç— çŸ¥è¯†ã€æ€åº¦ä¸Žåº”å¯¹è¡Œä¸º.

OBJECTIVES: To evaluate residents' knowledge, attitude and behavior towards coronavirus disease 2019 (COVID-19) in Hunan Province, and to explore the factors influencing behaviors. METHODS: A self-designed questionnaire was used to conduct an online survey for 4 139 Hunan residents. The contents included general population information, residents' knowledge, attitude and practice to COVID-19. RESULTS: Mean scores of knowledge, attitude, and behavior were 29.82±3.16, 6.71±1.12, and 14.93±1.45, respectively. Residents had the highest score of major symptoms of COVID-19 (3.96±0.39), but the lowest was the main transmission routes (3.47±0.89). A total of 22.68% of the residents were very or relatively afraid of the outbreak, but 95.22% of the residents had confidence in defeating COVID-19. In behavior dimension, "handling of suspicious symptoms" had the lowest score (3.58±0.75). The behavior implementation rate of "keep the surfaces of household items clean" (80.50%), "doing more exercise, reasonable diet, working and resting regularly" (84.59%), and "avoid hand contacting with eyes, mouth or nose" (89.51%) were relatively low. Pearson correlation coefficient showed that the knowledge, attitude, and practices score were correlated with each other (knowledge vs behavior: r=0.366; knowledge vs attitude: r=0.041; attitude vs behavior: r=0.100; all P<0.05). Multiple linear regression analysis showed that the knowledge, attitude and behavior on COVID-19 were mostly influenced by education background (all P<0.05), and the independent factors affecting behavior included knowledge and attitude, gender, permanent residence, education background (all P<0.05). CONCLUSIONS: Residents in Hunan Province have a good knowledge, attitude, and behavior to COVID-19. Nevertheless there are still weak links to be improved in all dimensions. It is necessary to strengthen knowledge and behavior of family protection, and care for residents' psychological health, especially persons with low education degree, male and rural residents.

Electrospun water-soluble polymer nanofibers for the dehydration and storage of sensitive reagents.

The ability to preserve and deliver reagents remains an obstacle for the successful deployment of self-contained diagnostic microdevices. In this study we investigated the ability of bacteriophage T7 to be encapsulated and preserved in water soluble nanofibers. The bacteriophage T7 was added to mixtures of polyvinylpyrrolidone and water and electrospun onto a grounded plate. Trehalose and magnesium salts were added to the mixtures to determine their effect on the infectivity of the bacteriophage following electrospinning and during storage. The loss of T7 infectivity was determined immediately following electrospinning and during storage using agar overlay plating and plaque counting. The results indicate that the addition of magnesium salts protects the bacteriophage during the relatively violent and high voltage electrospinning process, but is not as effective as a protectant during storage of the dried T7. Conversely, the addition of trehalose into the electrospinning mix has little effect on the electrospinning, but a more significant role as a protectant during storage.