Highly pathogenic avian influenza H5N1 virus outbreak among Cape cormorants (Phalacrocorax capensis) in Namibia, 2022

Umberto Molini1,2, John Yabe1, Irene K Meki3

  • 1School of Veterinary Medicine, Faculty of Health Sciences and Veterinary Medicine, University of Namibia, Windhoek, Namibia.

Related Concept Videos

Viral Recombination00:57

Viral Recombination

Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
23.7K
Viral Mutations00:36

Viral Mutations

A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
32.7K
Giant Tortoises and Darwin's Finches01:26

Giant Tortoises and Darwin's Finches

Giant Tortoises and Darwin's FinchesGiant tortoises and Darwin’s finches are two famous examples that helped shape the theory of evolution. Charles Darwin observed these animals on the Galápagos Islands during his voyage on the HMS Beagle. He noticed that tortoises from different islands had different shell shapes, adapted to the food and environment of each island. Finches had different beak shapes based on the types of food they ate. These observations showed how species adapt over time to...
Conservation of Declining Populations02:07

Conservation of Declining Populations

Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
9.7K
Threats to Biodiversity01:50

Threats to Biodiversity

There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
22.6K
Amphibians01:27

Amphibians

AmphibiansAmphibians are vertebrates that live both in water and on land during different parts of their lives. They begin life as eggs laid in water, hatch into larvae (like tadpoles), and then transform into adults through a process called metamorphosis. As adults, most amphibians develop lungs to breathe air but still need moist environments because their skin helps them absorb water and oxygen. Frogs, toads, salamanders, and newts are all examples of amphibians. These animals are important...