How well does societal mobility restriction help control the COVID-19 pandemic? Evidence from real-time evaluation

ObjectivesTo determine the impact of restrictions on mobility on reducing transmission of COVID-19. DesignDaily incidence rates lagged by 14 days were regressed on mobility changes using LOESS regression and logit regression between the day of the 100th case in each country to August 31, 2020. Setting34 OECD countries plus Singapore and Taiwan. ParticipantsGoogle mobility data were obtained from people who turned on mobile device-based global positioning system (GPS) and agreed to share their anonymized position information with Google. InterventionsWe examined the association of COVID-19 incidence rates with mobility changes, defined as changes in categories of domestic location, against a pre-pandemic baseline, using country-specific daily incidence data on newly confirmed COVID-19 cases and mobility data. ResultsIn two thirds of examined countries, reductions of up to 40% in commuting mobility (to workplaces, transit stations, retailers, and recreation) were associated with decreased COVID-19 incidence, more so early in the pandemic. However, these decreases plateaued as mobility remained low or decreased further. We found smaller or negligible associations between mobility restriction and incidence rates in the late phase in most countries. ConclusionMild to moderate degrees of mobility restriction in most countries were associated with reduced incidence rates of COVID-19 that appear to attenuate over time, while some countries exhibited no effect of such restrictions. More detailed research is needed to precisely understand the benefits and limitations of mobility restrictions as part of the public health response to the COVID-19 pandemic. WHAT IS ALREADY KNOWN ON THIS TOPICSince SARS-CoV-2 became a pandemic, restrictions on mobility such as limitations on travel and closure of offices, restaurants, and shops have been imposed in an unprecedented way in both scale and scope to prevent the spread of COVID-19 in the absence of effective treatment options or a vaccine. Although mobility restriction has also brought about tremendous costs such as negative economic growth and other collateral impacts on health such as increased morbidity and mortality from lack of access to other essential health services, little evidence exists on the effectiveness of mobility restriction for the prevention of disease transmission. A search of PUBMED and Google Scholar for publications on this topic through Sep 20, 2020 revealed that most of the evidence on the effectiveness of physical distancing comes from mathematical modeling studies using a variety of assumptions. One study investigated only the combined effect of several interventions, including physical distancing, among SARS-CoV-2 infected patients. WHAT THIS STUDY ADDSThis is the first study to investigate the association between change in mobility and incidence of COVID-19 globally using real-time measures of mobility at the population level. For this, we used Google Global Mobility data and the daily incidence of COVID-19 for 36 countries from the day of 100th case detection through August 31, 2020. Our findings from LOESS regression show that in two-thirds of countries, reductions of up to 40% in commuting mobility were associated with decreased COVID-19 incidence, more so early in the pandemic. This decrease, however, plateaued as mobility decreased further. We found that associations between mobility restriction and incidence became smaller or negligible in the late phase of the pandemic in most countries. The reduced incidence rate of COVID-19 cases with a mild to moderate degree of mobility restriction in most countries suggests some value to limited mobility restriction in early phases of epidemic mitigation. The lack of impact in some others, however, suggests further research is needed to confirm these findings and determine the distinguishing factors for when mobility restrictions are helpful in decreasing viral transmission. Governments should carefully consider the level and period of mobility restriction necessary to achieve the desired benefits and minimize harm.

The Relationship between Degree of Dysphagia and the Timing and Frequency of Videofluoroscopic Swallowing Studies in Patients with Acute Stroke / 대한연하장애학회지

OBJECTIVE: The aim of this study is to analyze relationships between dysphagia, and the timing and frequency of videofluoroscopic swallowing studies (VFSS) in patients with acute stroke. METHOD: We retrospectively reviewed the medical records of 111 patients with acute stroke whose dysphagia were evaluated by VFSS. The data were analyzed with descriptive statistics, t-test, and one-way ANOVA; Pearson correlation coefficient was also reported for all analyses. RESULT: Dysphagia was significantly different by transit time from stroke onset to arrival at the hospital (F=4.74, P=.011), paralysis site (F=3.05, P=.032), nasogastric tube (t=−3.81, P=.001), and diet just before the first VFSS (F=23.27, P<.001). VFSS timing was significantly different by smoking (t=2.88, P=.005), underlying disease (t=−3.58, P=.001), transit time from stroke onset to arrival at the hospital (F=5.90, P=.004), type of stroke (t=−5.24, P<.001), paralysis site (F=5.89, P=.001), nasogastric tube (t=−4.86, P=.001), surgery or angiography (t=−2.22, P=.032), level of consciousness (F=6.07, P=.000), length of stay (F=53.73, P=.001), department (F=16.37, P<.001), and diet just before the first VFSS (F=5.38, P=.006). VFSS frequency was significantly different by type of stroke (t=2.69, P=.008), nasogastric tube (t=−5.11, P=.001), length of stay (F=19.41, P=.001), department (F=7.18, P<.001), and the diet just before the first VFSS (F=16.67, P<.001). There was a significant correlation between dysphagia degree and the timing and frequency of VFSS. CONCLUSION: The more severe the degree of dysphagia, the longer the VFSS timing, and the greater VFSS frequency. The findings could be used for establishing systematic nursing care plans and active nursing intervention for dysphagia-related characteristics.

Importance-performance Analysis of Patients' and Nurses' perspectives on Rehabilitation Nursing Services / 재활간호학회지

PURPOSE: This study attempted to understand patients' and nurses' perspectives on the priority of rehabilitation nursing services using Importance-Performance Analysis (IPA). METHODS: This study used descriptive research design. Data were collected from 121 patients and 144 nurses using self-reported questionnaires. Statistical analysis included an independent t-test, analysis of variance (ANOVA), and IPA conducted using SPSS/WIN 21.0 version. RESULTS: There were no statistical differences between the patients' and nurses' mean scores on perceptions of the importance (t=-0.83, p=.409) and performance (t=-0.32, p=.751) of rehabilitation nursing services. The IPA matrix showed a difference between patients and nurses in terms of their perceived priority of nursing services. Regarding the perception of patients, "helping a patient to continue to practice bedside physiotherapy and occupational therapy", "providing information on the proper care agency and community resources", and "providing education for the prevention of complications" fell in the "concetrate here" area (2nd quadrant). CONCLUSION: The results showed that the priorities of patients and nurses did not match in terms of some of the rehabilitation nursing services. Thus, rehabilitation nursing services need to be provided based on the patients' needs. Allocation of resources for the service items that fell in the "concentrate here" area of the IPA need be reconsidered for the quality in nursing care.

Two Cases of Vivax Malaria Accompanied by Splenic Complications (such as splenic rupture and splenic infarction) / 감염과화학요법

Malaria is a protozoan disease transmitted by Anopheles mosquitoes. Since Plasmodium vivax malaria reemerged in the north west areas of South Korea in 1993, many cases with various manifestations have been reported. Clinicians should be aware of the rare and severe complications as well as the common complications. Splenic complications such as hematoma formation, rupture, torsion, cyst formation, and infarction are unusual manifestations of tertian malaria; therefore, we present two cases of P. vivax malaria with severe splenic complications with review of literature. One had a splenic infarction and the other had a splenic rupture, which was diagnosed by computed tomography. Both patients were successfully treated with a conservative approach.

A Case of 'True' Fungus-Infected Aneurysm of Abdominal Aorta in an Immunocompetent Patient / 감염과화학요법

Infected aneurysms are uncommon, frequently fatal lesions. "True" fungus-infected aneurysms are even rarer. Fungal infections have high morbidity and mortality. However, diagnosis is frequently difficult, since the symptoms are non-specific and standard diagnostic procedures are often insensitive. We experienced a patient with persistent fever and negative blood cultures. The patient was immunocompetent and had no risk factors, and was diagnosed with a fungus-infected aneurysm based on computed tomography and vascular surgery. The vascular tissue revealed some narrow-based budding yeast within the thrombus, suggesting Candida infection. Seventeen cases of infected aneurysm of the abdomen were reported in Korea from 1988 to 2007, although none were "true" fungus-infected aneurysms, making this the first fungus-infected aneurysm of the abdomen in Korea. Prompt diagnostic procedures and aggressive treatment modalities are necessary for patients with occult infection and negative blood cultures, regardless of their immunocompetence, because of the high morbidity and mortality of this condition.

Two Cases of Vivax Malaria Accompanied by Splenic Complications (such as splenic rupture and splenic infarction) / 감염과화학요법

Malaria is a protozoan disease transmitted by Anopheles mosquitoes. Since Plasmodium vivax malaria reemerged in the north west areas of South Korea in 1993, many cases with various manifestations have been reported. Clinicians should be aware of the rare and severe complications as well as the common complications. Splenic complications such as hematoma formation, rupture, torsion, cyst formation, and infarction are unusual manifestations of tertian malaria; therefore, we present two cases of P. vivax malaria with severe splenic complications with review of literature. One had a splenic infarction and the other had a splenic rupture, which was diagnosed by computed tomography. Both patients were successfully treated with a conservative approach.

A Case of 'True' Fungus-Infected Aneurysm of Abdominal Aorta in an Immunocompetent Patient / 감염과화학요법

Infected aneurysms are uncommon, frequently fatal lesions. "True" fungus-infected aneurysms are even rarer. Fungal infections have high morbidity and mortality. However, diagnosis is frequently difficult, since the symptoms are non-specific and standard diagnostic procedures are often insensitive. We experienced a patient with persistent fever and negative blood cultures. The patient was immunocompetent and had no risk factors, and was diagnosed with a fungus-infected aneurysm based on computed tomography and vascular surgery. The vascular tissue revealed some narrow-based budding yeast within the thrombus, suggesting Candida infection. Seventeen cases of infected aneurysm of the abdomen were reported in Korea from 1988 to 2007, although none were "true" fungus-infected aneurysms, making this the first fungus-infected aneurysm of the abdomen in Korea. Prompt diagnostic procedures and aggressive treatment modalities are necessary for patients with occult infection and negative blood cultures, regardless of their immunocompetence, because of the high morbidity and mortality of this condition.

Intraductal Ultrasonography for the Selection of Self Expandable Metal Stent in Extrahepatic Bile Duct Carcinoma / 대한소화기학회지

BACKGROUND/AIMS: Endoscopic stent insertion with self expandable metal stent (SEMS) is one of the standard palliative treatments for the patients with unresectable bile duct carcinoma. The aim of this study was to determine whether detection of longitudinal spread of extrahepatic bile duct carcinoma by intraductal US (IDUS) would be helpful in the selection of metal stent for the palliative drainage in bile duct carcinoma. METHODS: Seventeen patients with histologically proven unresectable extrahepatic bile duct carcinoma who underwent endoscopic retrograde cholangiography with IDUS were included. Longitudinal cancer extension along the bile duct was determined and, then, compared with the cholangiographic image. The type and length of SEMS was selected based on IDUS findings. RESULTS: IDUS demonstrated more extensive tumor spread than ERC in 7 of 17 (41.2%) patients with the hepatic side of strictures and in 7 of 16 (43.8%) patients with the duodenal side of strictures. Five of 17 (29.4%) patients have changed the plan of endoscopic biliary drainage with SEMS after IDUS. There was no early dysfunction associated with endoscopic biliary drainage. CONCLUSIONS: IDUS prior to biliary drainage would be useful in demonstrating longitudinal extension of extrahepatic bile duct carcinoma. It has a potential role in helping stent selection and identifying factors which predict early stent dysfunction.