1 More than 592,000 merchant locations now accept chip-enabled Visa cards, up 49 percent in October.  Visa saw the volume of chip transactions in the U.S. increase by 42 percent from September to October, from $4.8 billion to $8.9 billion.
Protozoan infections are parasitic diseases caused by organisms formerly classified in the Kingdom Protozoa.They include organisms classified in Amoebozoa, Excavata, and Chromalveolata. Examples include Entamoeba histolytica, Plasmodium (some of which cause malaria), and Giardia lamblia.Trypanosoma brucei, transmitted by the tsetse fly and the cause of African sleeping sickness, is another example.hey include organisms classified in Amoebozoa, Excavata, and Chromalveolata. Examples include Entamoeba histolytica, Plasmodium (some of which cause malaria), and Giardia lamblia. Trypanosoma brucei, transmitted by the tsetse fly and the cause of African sleeping sickness, is another example.
Protozoa are a diverse group of organisms that are non-phototrophic, unicellular, eukaryotic microorganisms with no cell walls. In general, protozoa have different stages in their lifecycles. Trophozoites are the active, reproductive, and feeding stage.his group can often have complex lifecycles that require multiple host species. Many sporozoans cause disease. Of all the diseases caused by protozoa, the deadliest is malaria, caused by the sporozoan Plasmodium. When a female Anopheles mosquito bites a human, it is able to transmit Plasmodium into the bloodstream.