Health risks associated with potentially toxic elements in three fish species from Betoya Bay, Morocco: An integrated approach to human health risk assessment.

This study examines the concentrations of arsenic (As), cadmium (Cd), chromium (Cr), cobalt (Co), copper (Cu), iron (Fe), mercury (Hg) and zinc (Zn) in three fish species (Sardina pilchardus, Engraulis encrasicolus, Trachurus trachurus) from Betoya Bay, collected in winter and summer. Significant variations were observed between tissues (p < 0.05), with the liver being the most contaminated.

Hg, Cd, and Pb in fish of the Moulouya River, Morocco, and human health risk.

Concentrations of toxic metals (Hg, Pb, and Cd) were determined in the muscles of , , and caught from the Moulouya River of Morocco by graphite furnace (for Pb and Cd) and cold vapour (for Hg) atomic absorption spectrometry, after acid digestion. Although the concentration of metals in some species was relatively high, no health risk has been identified in comparison to the maximum limits as set by the European Commission. The order of increasing concentrations was Cd < Hg < Pb.

Mosquito bites and stage-specific antibody responses against Plasmodium falciparum in southern Ghana.

Background: The human host elicits specific immune responses after exposure to various life stages of the malaria parasite as well as components of mosquito saliva injected into the host during a mosquito bite. This study describes differences in IgG responses against antigens derived from the sporozoite (PfCSP), asexual stage parasite (PfEBA175) and the gametocyte (Pfs230), in addition to an Anopheles gambiae salivary gland antigen (gSG6-P1), in two communities in Ghana with similar blood stage malaria parasite prevalence.

Methods: This study used archived plasma samples collected from an earlier cross-sectional study that enrolled volunteers aged from 6 months to 70 years from Simiw, peri-urban community (N = 347) and Obom, rural community (N = 291).