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  • Virus Hunters: Epidemiology of Nipah Virus

    Virus Hunters: Epidemiology of Nipah Virus


    In this activity, students will be exploring cases of Nipah virus (NiV) infection as an epidemiologist would, by collecting evidence and making calculations and predictions, based on scientific data.

  • Wash Your Hands

    Wash Your Hands

    Image of the Week

    As few as eighteen of these norovirus particles are sufficient to infect one person.

  • Viral Lysis and Budding

    Viral Lysis and Budding


    This activity outlines two demonstrations that model how enveloped and nonenveloped viruses are released from infected cells.

  • HIV Protease Inhibitors

    HIV Protease Inhibitors


    This demonstration models how the HIV protease enzyme functions and how its activity is blocked by a class of anti-HIV drugs.

  • HIV Life Cycle Activities

    HIV Life Cycle Activities


    A collection of activities and demonstrations focusing on various aspects of the human immunodeficiency virus (HIV) life cycle. They are designed to be completed individually or as part of the series...

  • Viral DNA Integration

    Viral DNA Integration


    In this hands-on activity, students model how a double-stranded DNA copy of the HIV genome is integrated into the host cell DNA.

  • HIV Reverse Transcription and AZT

    HIV Reverse Transcription and AZT


    Students model how the anti-HIV drug AZT (azidothymidine) interferes with the process of viral replication.

  • HIV Receptors and Co-receptors

    HIV Receptors and Co-receptors


    This demonstration models the first step of the HIV life cycle: the binding of HIV envelope proteins to receptors on human helper T cells.

  • Deadly Straw

    Deadly Straw

    Image of the Week

    Blood cells adorn the proboscis of a female mosquito.

  • Think Like a Scientist: Natural Selection in an Outbreak

    Think Like a Scientist: Natural Selection in an Outbreak

    Scientists at Work

    (7 min 29 sec) This video brings us to the front lines of the 2013–2015 Ebola outbreak in west Africa and explains how scientists monitored the evolution of the virus by analyzing its genome.

  • Patterns of Zoonotic Disease

    Patterns of Zoonotic Disease

    Data Point

    In this study, scientists analyzed previously published data on terrestrial mammal zoonotic host species and the pathogens they carry to search for global patterns of zoonotic disease distribution.

  • Virus Explorer

    Virus Explorer

    Click & Learn

    Explore the similarities and differences of a variety of viruses by sorting them based on structure, genomic make-up, host range, transmission mechanism, and vaccine availability.

  • Virus Hunter: Monitoring Nipah Virus in Bat Populations

    Virus Hunter: Monitoring Nipah Virus in Bat Populations

    Scientists at Work

    (9 min 1 sec) In this video we follow scientists working in Bangladesh as they test fruit bat populations to determine whether they are infected with Nipah virus—a potentially deadly virus when passed on to humans.

  • Mosquito-Borne Viral Diseases

    Mosquito-Borne Viral Diseases


    Most of the viral diseases transmitted by mosquitoes are caused by RNA viruses. One group of RNA viruses, the flavivirus, includes yellow fever, dengue, West Nile, Japanese encephalitis, St. Louis...

  • Measles Outbreak

    Measles Outbreak

    Image of the Week

    The measles virus can spread easily among people who have no immunity against it, as the current outbreak shows.

  • The Anatomy of a Sneeze

    The Anatomy of a Sneeze

    Image of the Week

    A germ-spreading sneeze unleashes a shower of large liquid droplets and a moist gas cloud of smaller ones.

  • Attacking AIDS from Within

    Attacking AIDS from Within

    Image of the Week

    Killer T-cells captured in the act of destroying HIV-infected cells.

  • Dengue Fever

    Dengue Fever

    Image of the Week

    A 3D model of the dengue virus reveals a shape like a soccer ball with an outer coating of glycoproteins.

  • Hunting Down HIV

    Hunting Down HIV

    Image of the Week

    The human immunodeficiency virus (HIV) is discovered “hiding” between the cells of the gut.

  • Rhinovirus


    3D Model

    A 3D model of rhinovirus, an RNA genome virus that is the main cause of the common cold in humans.

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