Summary The coronavirus disease 2019 (Covid‐19) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2), is an international public health crisis with devastating effects. In particular, this pandemic has further exacerbated the burden in tropical and subtropical regions of the world, where dengue fever, caused by dengue virus (DENV), is already endemic to the population. The similar clinical manifestations shared by Covid‐19 and dengue fever have raised concerns, especially in dengue‐endemic countries with limited resources, leading to diagnostic challenges. In addition, cross‐reactivity of the immune responses in these infections is an emerging concern, as pre‐existing DENV‐antibodies might potentially affect Covid‐19 through antibody‐dependent enhancement. In this review article, we aimed to raise the issue of Covid‐19 and dengue fever misdiagnosis, not only in a clinical setting but also with regards to cross‐reactivity between SARS‐CoV‐2 and DENV antibodies. We also have discussed the potential consequences of overlapping immunological cascades between dengue and Covid‐19 on disease severity and vaccine development.

has been the most devastating pandemic in human history. Despite the highest scientific efforts and investments, a reliable and certified medication has yet to be developed regarding to immune or cure this virus. However, while synthetic medications are gaining the focus of attentions, it appears from a significant number of recent studies that plant-based substances could also be potential candidates for developing effective and secure remedies against this novel disease. Citing such recent works, this review primarily demonstrates the antiviral potentials of medicinal plants for inhibiting human coronaviruses. It also shows the importance of antiviral plants substances, particularly in the development of a broad spectrum medication for coronaviruses including SARS-CoV-2 responsible for COVID-19.

The lipid and fatty acid profiles of eight Helicobacter spp. (H. nemestrinae, H. acinonyx, H. canis, Helicobacter sp. strain CLO-3, ''H. rappini'' [Flexispira rappini], H. pametensis, Helicobacter sp. strain Bird-B, and Helicobacter sp. strain Bird-C) and the fatty acid profiles of five additional species (H. pylori, H. felis, H. muridarum, H. mustelae, and H. fennelliae) were analyzed and compared. A heterologous fatty acid profile was observed among the Helicobacter spp., and on that basis the species could be divided into two groups. Group A had 19-carbon cyclopropane fatty acid (19:0cyc) and tetradecanoic acid (14:0) as the major fatty acids, and group B characteristically lacked the 19:0cyc and had hexadecanoic acid (16:0) and octadecenoic (18:1) acids as the major fatty acids. The species of group A are primarily gastric colonizers, and those of group B are primarily intestinal colonizers. Seven of the eight species studied showed the unusual and characteristic presence of cholesteryl glucosides (CGs), and most of these seven showed a very large amount (9.7 to 27.4% of the weight of total extractable lipid). The types of CGs and their distribution in different species were as follows: cholesteryl-6-O-acyl-␣-D-glucopyranoside (cholesteryl-6-O-tetradecanoyl-␣-D-glucopyranoside in H. nemestrinae and mainly cholesteryl-6-O-dodecanoyl-␣-D-glucopyranoside in ''H. rappini''), cholesteryl-␣-D-glucopyranoside (H. nemestrinae, H. acinonyx, H. canis, Helicobacter sp. strain CLO-3, and ''H. rappini''), and cholesteryl-6-O-phosphatidyl-␣-D-glucopyranoside (H. nemestrinae, H. acinonyx, H. canis, and Helicobacter sp. strain CLO-3). Besides this, we could also detect cholesteryl acyl glucoside in H. acinonyx, cholesteryl glucoside inHelicobacter sp. strains Bird-B and -C, and cholesteryl phosphatidyl glucoside in ''H. rappini'' and Helicobacter sp. strain Bird-C. A selective accumulation of free cholesterol was observed in the neutral lipid fractions. On the basis of the detection of CGs in 11 of the 13 species studied so far, the presence of CGs appears to be a characteristic feature of the genus Helicobacter. In view of this and also because of a simple and rapid detection method described herein, the CGs can be used as a valuable chemotaxonomic marker.

Purpose Recent research has demonstrated the psychological impact of the coronavirus disease 2019 (COVID‐19) pandemic among the general population. However, COVID‐19‐related suicides among healthcare professionals (HCPs) have yet to be investigated. Findings The present study utilized retrospective press media suicide reports and identified a total of 26 worldwide HCP COVID‐19‐related suicide cases (aged 22–60 years; 14 females; most of the cases from India). The cases comprised doctors ( n = 11), nurses ( n = 9), paramedics ( n = 5), and one medical student. Being infected with the COVID‐19 was the most common suicide reason, followed by work‐related stress, and fear related to COVID‐19 infection/transmission. Among the eight cases diagnosed with COVID‐19, most were female ( n = 6), and either doctors ( n = 4) or nurses ( n = 4). Practice Implications The present findings will be helpful for human resources departments in healthcare workplaces in ensuring HCP's mental wellbeing.