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Defines viruses and traces the way they enter and infect the human body. Discusses virus mutation. Documents researchers working to develop vaccines from viruses. Explains why retroviruses pose a problem to scientists every year.
(Source: DCMP)
Fruit bats carry the Nipah virus, which can be transmitted to humans and cause severe disease. In Bangladesh, the virus causes a disease outbreak almost every year. Dr. Jon Epstein of the EcoHealth Alliance explains the evidence that revealed bats are the natural reservoir of the virus. Their research also shows the route of transmission to humans. Dr. Epstein and collaborators in Bangladesh are now monitoring bat populations throughout the country for the presence of the virus to identify human populations that might be at risk of transmission.
Draws on documentary and archival footage, 3-D and 2-D animations, and high-tech imaging to investigate a variety of virological topics: the nature of pandemics as illustrated by the SARS outbreak in China; genetic sequencing of Spanish influenza from exhumed tissue of a century-old corpse; how animal viruses jump the species barrier; the dissection of live viruses in a biosafety level-4 lab; the work of an Ebola research team in Gabon; the discovery of mimivirus; applications of Onyx-015, a genetically engineered adenovirus; and more. Features Vincent A. Fischetti of The Rockefeller University, Jeffery Taubenberger of the Armed Forces Institute of Pathology, Y. Guan of The University of Hong Kong, Didier Raoult of the French National Center for Scientific Research, and other leading virus specialists.
It is the virus hunters who are leading the life-and-death battles against viruses. Ken Stedman hunts extreme viruses that live in the boiling acid pools of Lassen Volcanic National Park in California. Donald Henderson is responsible for wiping out smallpox-the only virus that humanity has conquered. Within a year of its eradication, AIDS emerged to become a worldwide pandemic. Ebola, Marburg, SARS, West Nile Virus, and a host of new infectious diseases soon followed. Also explores such chronic diseases as cancer, heart disease, multiple sclerosis, and mental illness, which are now suspected of being caused by viruses. Even autism is suspected of being caused by an infection during pregnancy.
Part of the "Branches on the Tree of Life" series. Describes the discovery of viruses and their structure, how viruses are studied, how they infect their hosts, and how they replicate. Provides details on the T-4 bacteriophage and retroviruses, such as HIV.
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. This video discusses virus structures and why a host is critical for viral reproduction. Part of "The Amoeba Sisters" series.
Outlines the characteristics, shapes, and structures of viruses and monerans, more commonly called bacteria. Notes ways that both affect our lives.
In this episode, groups of citizen scientists use apps and maps to help researchers gather data about medical conditions. Sensors on asthma inhalers generate real-time maps of environmental dangers to help patients and physicians in Louisville, Kentucky. In West Oakland, California, citizens confront air pollution and rising asthma rates by collecting traffic data. Citizen scientists are fighting mosquito-borne diseases with apps and crowd-sourced data in Barcelona, Houston, and New Orleans. Part of "The Crowd and the Cloud" series.
Corals are important ecosystem engineers, providing habitat and nutrient recycling to tropical reefs. However, coral species’ richness and abundance are in decline worldwide, due in large part to the impacts from global industrialization and human population growth. Coral disease is a major contributor to this decline of tropical reefs, and therefore, investigations into the causes of and remedies to these diseases are of critical importance. Part of the National Science Foundation Series “Science Nation.”
Take a look through a microscope at a virus attacking a cell and see the immune system in action. Viruses continue to replicate until they break apart the host cell and start spreading throughout the body, destroying healthy cells along the way. The immune system overpowers a virus with white blood cells and creates the antibodies that kill the same types of viruses quickly if they return.
In the jungles of central Africa where primatologists discovered that the deadly Ebola virus has not only emerged again among wild gorillas, but also spread to humans. Join a team from National Geographic on a trek into the jungle to investigate the source of this fearsome virus. A few gorillas that survived the outbreak could reveal Ebola's source and help scientists prevent it from infecting humans. Segment of video from Wild Chronicles Series.
Viruses are tiny agents that can infect a variety of living organisms, including bacteria, plants, and animals. The Dengue virus is a mosquito-borne viral disease occurring in tropical and subtropical areas. Scientists at the University of California, Berkley have identified a key culprit responsible for the severe symptoms related to Dengue fever.
Covid-19 image, 3D model with accompanying video exploration of the 3D model.
(Source: North Carolina Central University)
Dengue virus, which causes the infectious disease dengue fever, is estimated to infect more than 400 million people every year. It is usually transmitted through mosquitoes. Scientists working to eradicate the disease have discovered that dengue virus is not able to replicate in mosquitoes infected with a bacteria called Wolbachia. The researchers developed a plan to release infected mosquitoes into the wild so that Wolbachia can spread throughout the mosquito population. Part of the "I Contain Multitudes" series.
Mosquitoes spread several viruses, including Dengue, Chikungunya, Yellow Fever, and Zika. Health officials are developing various methods to help reduce the spread of infections. One of those methods is to produce genetically modified mosquitoes that, when released into the wild, reproduce with wild mosquitoes and cause their offspring to die.
The immune system defends the body from pathogens that cause disease. Scientists have been able to develop vaccines to prevent the spread of deadly diseases. They continue to research new vaccines and pathways to eradicate potentially harmful viruses. Part of the "Real World Science" series.
Gene therapy is a method for treating inherited diseases by delivering corrective versions of genes to patients. Dr. Jean Bennett and Dr. Albert Maguire focused their careers on developing a successful gene therapy for an inherited form of childhood blindness called Leber congenital amaurosis (LCA). This documentary tells the story of how the LCA gene therapy was developed. Students will learn how autosomal recessive conditions are inherited, how scientists can use modified viruses to deliver human genes to cells, what makes the eye an ideal tissue for gene therapy, and how model organisms are used to test treatments before they are tested in patients.
Where does the flu come from? How can science make the flu vaccine better? A scientist armed with pipe cleaners and 10,000 RNA samples explains.
Host Trace Dominguez discusses the science behind getting a fever when sick. Fevers are integral to effective immune responses and ensure the immune system takes appropriate action against the offending virus or bacteria. Part of the "Uno Dos of Trace" series.
The Caribbean Spiny Lobster has been a mainstay of Florida’s seafood industry for decades, but the harvest went off a cliff about a decade ago, declining about 30%, and has never rebounded. Biologists think the culprit is a virus called PaV1. University of Florida Ecologist Don Behringer wants to know how this pathogen has spread so far and so fast.
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Biology related concepts
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