MENINGOCOCCAL DISEASE DURING THE HAJJ AND UMRAH MASS GATHERINGS

Meningococcal disease during the Hajj and Umrah mass gatherings

The Hajj and Umrah religious mass gatherings hosted by the Kingdom of Saudi Arabia can Rectangle Dining Table facilitate the transmission of infectious diseases.The pilgrimages have been associated with a number of local and international outbreaks of meningococcal disease.These include serogroup A disease outbreaks in 1987 and throughout the 1990s

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Hibernation Conditions Contribute to the Differential Resistance to Cadmium between Urban and Forest Ant Colonies

Trace metals such as cadmium are found in high concentrations in urban environments.Animal and plant populations living in heavily contaminated environments could adapt to trace metals exposure.A recent study shows that urban populations of the acorn ant Temnothorax nylanderi are more resistant to cadmium than their forest counterparts.However, thi

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Cellular sialoglycans are differentially required for endosomal and cell-surface entry of SARS-CoV-2 in lung cell lines.

Cell entry of severe acute respiratory coronavirus-2 (SARS-CoV-2) and other CoVs can occur via two distinct routes.Following receptor binding by the spike glycoprotein, membrane fusion can be triggered by spike cleavage either at the cell surface in a transmembrane serine protease 2 (TMPRSS2)-dependent manner or within endosomes in a cathepsin-depe

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