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001). Women, older age, higher BMI, and fewer years of education were significantly associated with higher prevalence of radiographic PFOA, osteophytes, and joint space narrowing. Conclusion Prevalence of radiographic PFOA was high among Chinese population.Key Points• The multi-center population-based osteoarthritis study shows the prevalence of radiographic PFOA was high among Chinese population.• Older age, female gender, obesity, and few years of education were associated with a high risk of PFOA.• Prevalence of lateral radiographic OA was higher than medial radiographic OA at PF joint.Since December 2019, the pandemic caused by coronavirus disease 2019 (COVID-19) raises a real public health problem. COVID-19 appeared in Wuhan (Hubei province) in China. Drugs that have been used in rheumatology for decades seem to be effective in this infection and are for the most part being studied. check details The rational use of these anti-rheumatic drugs is based on the cytokinic storm (hyperproduction of IL1, IL6, TNF α) in the body by COVID-19 in its severe form. In this review, the authors make the difference between the infectious and auto-inflammatory part of COVID-19; the disease does not seem to be a risk factor for admission to the intensive care unit for patients suffering from inflammatory rheumatism; however, the poverty of studies on this subject should be noted. The authors also review anti-rheumatic drugs while studying COVID-19 treatment.Giant cell arteritis (GCA) is a granulomatous vasculitis involving large- and middle-sized arteries, with a predilection for cranial arteries. In this paper, we aim to describe a case of a biopsy- and ultrasound-proven GCA, presenting with anterior ischemic optic neuropathy (AION) and normal CRP and ESR at diagnosis and during follow-up, and to review the literature on GCA cases with low inflammatory markers, with a particular focus on the presence of eye involvement. Both CRP and ESR are important in the diagnosis of GCA; occurrence of this disease with normal acute phase reactants is unusual but does not rule out the diagnosis. Headache and visual manifestations were the most common symptoms reported in these cases; therefore, patients with the clinical suspicion of GCA require immediate ultrasound and/or temporal artery biopsy for correct diagnosis and treatment initiation in order to avoid permanent visual loss.The novel coronavirus (Sars-CoV-2) pandemic has spread rapidly, from December to the end of March, to 185 countries, and there have been over 3,000,000 cases identified and over 200,000 deaths. For a proportion of hospitalized patients, death can occur within a few days, mainly for adult respiratory distress syndrome or multi-organ dysfunction syndrome. In these patients, clinical signs and symptoms, as well as laboratory abnormalities, suggest a cytokine storm syndrome in response to the viral infection. No current targeted treatment is yet available for COVID-19, an unknown disease up to 2 months ago, which challenges doctors and researchers to find new drugs or reallocate other treatments for these patients. Since the beginning of the COVID-19 outbreak, a growing body of information on diagnostic and therapeutic strategies has emerged, mainly based on preliminary experience on retrospective studies or small case series. Antivirals, antimalarials, corticosteroids, biotechnological and small molecules, convalescent plasma and anticoagulants are among the drugs proposed for the treatment or in tested for COVID-19. Given the complexity of this new condition, a multidisciplinary management seems to be the best approach. Sharing and integrating knowledge between specialists, to evaluate the correct timing and setting of every treatment, could greatly benefit our patients. We reviewed the literature, combining it with our experiences and our specialist knowledge, to propose a management algorithm, correlating the clinical features with laboratory and imaging findings to establish the right timing for each treatment.Key Points• Critically ill COVID-19 patients show signs of cytokine storm syndrome.• No current targeted therapy is available, but a lot of drugs are in tested.• A multidisciplinary approach is crucial to manage COVID-19.• Choosing the correct timing of treatment is of pivotal importance to avoid the most severe complications.Socio-economic inequality in the physical activity environment surrounding primary schools may contribute to socio-economic gradients in physical activity and childhood obesity levels. Using a cross-sectional study design, ordinary least squares and logistic regressions were fitted to assess variation in walkability and greenspace within 1 km of primary schools (n = 7133) according to area-level socio-economic position (SEP) and remoteness. Effect modification by school location (major cities or regional/remote) was assessed through stratified analyses. Walkability scores significantly increased from low to high school neighbourhood SEP (p less then 0.01) and from remote/very remote to major city locations (p less then 0.01). Greenspace area (hectares) in the school neighbourhood was greater in highest compared to lowest SEP areas (β = 18.75, 95%CI 6.63, 30.87) and less in major cities compared to remote/very remote locations (β = - 23.9, 95%CI - 39.7, - 8.1). Schools in highest SEP areas and major cities had higher odds of having any greenspace in their neighbourhood, compared to those in lowest SEP and remote/very remote locations (OR 5.93, (95% CI 4.50, 7.05), OR 20.19, (95% CI 16.05, 25.39) respectively). Stratified results (major cities or regional/remote locations) found the highest SEP school neighbourhoods had higher walkability scores and more greenspace compared to lowest SEP school neighbourhoods in both strata, although overall SEP gradient in walkability and greenspace area only remained in major cities. Walkability and greenspace infrastructure in the school neighbourhood could be improved in areas of lower SEP so that all school children have the opportunity for physical activity.Community health workers (CHWs) can reduce health disparities for low income patients but type of contact and outcomes has had limited study. Low-income Hispanic primary care patients with hemoglobin A1c [HbA1c] ≥ 9% received care managment (CM) over 6 months classified as (CM1) telephone only; (CM2) clinic visit but no calls; (CM3) clinic visit with calls; and (CM4) ≥ 2 visits ± calls. Type of CM delivery and time to DM control (HbA1c less then 9%) examined in Cox proportional hazards model and more rapid control within 6 months using logistic regression. Models adjusted for demographics, clinical, and health care variables. At baseline, 523 patients had mean HbA1c 10.9% (SD = 1.7%), mean age 57.9 years (SD = 10), 58.5% women, 87.6% Hispanic, and 55.5% uninsured. CM types for patients 51 (9.8%) CM1; 192 (36.7%) CM2; 44 (8.4%) CM3; and 236 (45.4%) CM4. Median time to HbA1c control was 197 days (95% CI [71, 548]) and 41.5% achieved control within 6 months. Compared with CM1, control was more rapid for CM2 (Hazard ratio [HR] 1.