Immunology

Masterswitch discovered in body's immune system

Scientists have discovered a critical part of the body's immune system with potentially major implications for the treatment of some of the most devastating diseases affecting humans.

Diseases, Conditions, Syndromes

Engineered DNA vaccine protects against emerging Mayaro virus

Infections by the mosquito-borne Mayaro virus (MAYV) have largely been restricted to people who ventured into the heavily forested areas of Trinidad and Tobago and neighboring regions of South America. However, recent laboratory ...

Pediatrics

AAP releases 2019 childhood immunization schedules

(HealthDay)—The 2019 recommended childhood and adolescent immunization schedules have been issued by the American Academy of Pediatrics and published online Feb. 5 in Pediatrics.

Diseases, Conditions, Syndromes

Measles outbreaks are back

In 2000, the United States declared that measles had been eliminated from the country. According to the Centers for Disease Control and Prevention, that means measles is no longer endemic—or constantly present—and there ...

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Infectious disease

An infectious disease is a clinically evident disease resulting from the presence of pathogenic microbial agents, including pathogenic viruses, pathogenic bacteria, fungi, protozoa, multicellular parasites, and aberrant proteins known as prions. These pathogens are able to cause disease in animals and/or plants. Infectious pathologies are usually qualified as contagious diseases (also called communicable diseases) due to their potential of transmission from one person or species to another. Transmission of an infectious disease may occur through one or more of diverse pathways including physical contact with infected individuals. These infecting agents may also be transmitted through liquids, food, body fluids, contaminated objects, airborne inhalation, or through vector-borne spread.

The term infectivity describes the ability of an organism to enter, survive and multiply in the host, while the infectiousness of a disease indicates the comparative ease with which the disease is transmitted to other hosts. An infection however, is not synonymous with an infectious disease, as an infection may not cause important clinical symptoms or impair host function.

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