Unlocking the mystery of preexisting drug resistance: Study sheds light on cancer evolution
The evolution of resistance to diseases, from infectious illnesses to cancers, poses a formidable challenge.
Jul 15, 2024
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The evolution of resistance to diseases, from infectious illnesses to cancers, poses a formidable challenge.
Jul 15, 2024
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What if you could stop germs at the door? Or know within minutes if a virus was in the air?
Jul 12, 2024
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As we age, our immune systems start to flag, leaving us more susceptible to cancer and infections—and less responsive to vaccines and cancer immunotherapies.
Jul 12, 2024
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More than 2,400 patients at hospitals around Portland, Oregon, may have been exposed to infectious diseases such as hepatitis B and C, as well as HIV, because of an anesthesiologist who may not have followed infection control ...
Jul 12, 2024
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A new study has revealed significant discrepancies in the prescription of COVID-19 antivirals, indicating that many patients may not have received the most effective treatment available.
Jul 11, 2024
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An article published in the journal Emerging Infectious Diseases shows that Mayaro and chikungunya viruses are circulating at the same time (co-circulating) in Roraima, Brazil's northernmost state and part of the Amazon biome. ...
Jul 10, 2024
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In order to find previously unknown substances for the treatment of chlamydial infections, the scientific team led by Georg Stary (Department of Dermatology at MedUni Vienna, CeMM of the Austrian Academy of Sciences) screened ...
Jul 10, 2024
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In a new study, Yale researchers identify the targets in the human body to which pathogens transmitted by mosquitoes, ticks, and other vectors bind. Their findings, they say, could help address the rising threat of vector-borne ...
Jul 9, 2024
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Twelve years ago, cancer researchers at University of California San Diego identified a molecule that helps cancer cells survive by shuttling damaging inflammatory cells into tumor tissue. In new research, they show that ...
Jul 3, 2024
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Dexamethasone is one of the most important drugs in the treatment of severe COVID-19, but patients respond very differently to the therapy. Researchers at the German Center for Neurodegenerative Diseases (DZNE) and Charité—Universitätsmedizin ...
Jul 3, 2024
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Infectious diseases, also known as contagious diseases or transmissible diseases, and include communicable diseases, comprise clinically evident illness (i.e., characteristic medical signs and/or symptoms of disease) resulting from the infection, presence and growth of pathogenic biological agents in an individual host organism. In certain cases, infectious diseases may be asymptomatic for much or all of their course. Infectious pathogens include some viruses, bacteria, fungi, protozoa, multicellular parasites, and aberrant proteins known as prions. These pathogens are the cause of disease epidemics, in the sense that without the pathogen, no infectious epidemic occurs.
Transmission of pathogen can occur in various ways including physical contact, contaminated food, body fluids, objects, airborne inhalation, or through vector organisms. Infectious diseases that are especially infective are sometimes called contagious and can be easily transmitted by contact with an ill person or their secretions. Infectious diseases with more specialized routes of infection, such as vector transmission or sexual transmission, are usually regarded as contagious but do not require medical quarantine of victims.
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 is not synonymous with an infectious disease, as some infections do not cause illness in a host.
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