Rickettsia rickettsii and Rickettsia typhi in hospitalized children diagnosed with Pediatric Multisystemic Inflammatory Syndrome in Merida, Yucatan.

Multisystem Inflammatory Syndrome in Children (MIS-C) presents with fever, fatigue, elevated inflammatory markers (acute phase reactants), and a history of exposure to SARS-CoV-2 or positive antibodies to SARS-CoV-2. As the COVID-19 pandemic unfolded, the risk of MIS-C in the pediatric population increased. However, exposure to other viruses and the presence of SARS-CoV-2 positive antibodies in children hospitalized for various pathogen-associated illnesses will also remain common and may complicate differential diagnoses with diseases endemic to the region such as rickettsial diseases.

Detection of Sars-Cov-2 in the air of two hospitals in Hermosillo, Sonora, México, utilizing a low-cost environmental monitoring system.

Objective: The best way of preventing the dispersion of an infectious disease is decreasing the transmissibility of the pathogen. To achieve such a goal, it is important to have epidemiological surveillance to retrieve data about its routes of transmission and dispersion. This study investigated the possibility of SARS-CoV-2 detection using filtration through 0.

Halogen bonds on substituted dibromonitrobenzene derivatives.

Halogen bonding is a noncovalent interaction that has attracted great attention because of its importance in several areas, such as photonics, nonlinear optics, pharmaceutical products, supramolecular engineering, biochemistry, protein-ligand complexes, and polymer interactions. In this context, we describe the synthesis, molecular structure, supramolecular arrangement, and theoretical calculations of five dibromonitrobenzene derivatives, which present different halogen atoms substituted. The solid-state characterization was carried out by X-ray diffraction with the contribution of Hirshfeld surfaces for analysis of molecular interactions.

Rocky Mountain Spotted Fever and Pregnancy: Four Cases from Sonora, Mexico.

We present a series of four pregnant women with Rocky Mountain spotted fever (RMSF) that occurred in Sonora, Mexico, during 2015-2016. Confirmatory diagnoses were made by polymerase chain reaction or serological reactivity to antigens of by using an indirect immunofluorescence antibody assay. Each patient presented with fever and petechial rash and was treated successfully with doxycycline.

Experimental endometriosis in the rat is correlated with colonic motor function alterations but not with bacterial load.

Endometriosis commonly presents with symptoms that mimic chronic gastrointestinal disorders. The authors used the autotransplantion model of endometriosis in rats to investigate the possible underlying mechanisms. After the rats were killed, the presence of endometriotic vesicles, colonic inflammation, and white blood cell (WBC) numbers in the peritoneal fluid was determined.

Effect of bacterial chemotactic peptides on intestinal inflammation in animal models of acute and chronic "relapsed" colitis.

It is known that bacterial chemotactic peptides such as formyl-methionyl-leucyl-phenylalanine (fMLP) exacerbate colitis during the acute phase, but the precise role of fMLP during chronic "relapse" is unknown. In this study we examined the effect of bacterial peptides in animal models of acute and chronic "relapsed" colitis. Different parameters were evaluated, such as tissue damage, myeloperoxidase activity, and mucosal function.

Anion mediated structural motifs in silver(I) complexes with corannulene.

The synthesis of three new silver(I) complexes with corannulene is reported. In the crystal these complexes form extended networks of Ag(+) ions, corannulene nuclei, and counterions, similar to the networks reported for Ag(+) with other polynuclear aromatic hydrocarbons (PAHs). The preferred Ag(+)-arene interaction is compared with the model developed by Kochi.

Bacterial load in animal models of acute and chronic 'reactivated' colitis.

Background: The involvement of enteropathogenic microorganisms in the pathogenesis of inflammatory bowel disease (IBD) and their importance in the different phases of inflammation are still unknown.

Aim: To quantify the aerobic bacterial load in models of acute and chronic 'reactivated' colitis, and correlate this with damage.

Methods: Acute colitis was induced in rats by administration of trinitrobenzene sulfonic acid (TNBS) or dextran sulfate sodium (DSS).

Crystal structure of dibenzoyl diselenide.

C14H10O2Se2 is monoclinic, P2(1)/c. The unit-cell dimensions at 293 K are a = 12.795(2), b = 12.

The U.S.-Mexico Border Infectious Disease Surveillance project: establishing bi-national border surveillance.

In 1997, the Centers for Disease Control and Prevention, the Mexican Secretariat of Health, and border health officials began the development of the Border Infectious Disease Surveillance (BIDS) project, a surveillance system for infectious diseases along the U.S.-Mexico border.