# How do you know if you have a virus?

- Institution: TED
- Department: TED-Ed
- Speaker: Cella Wright
- Year: 2020
- Level: For everyone
- Language: English
- Subjects: Biology, Medicine and health, Teaching and learning
- Source: [TED](https://www.ted.com/talks/cella_wright_how_do_you_know_if_you_have_a_virus)
- Licence: [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) (Non-commercial use only, and no changed versions.)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

A new virus emerges and spreads like wildfire. In order to contain it, researchers must first collect data about who's been infected. Two main viral testing techniques are critical: one tells you if you have the virus and the other shows if you've already had it. So, how exactly do these tests work? Cella Wright explores the science of PCR tests and immunoassays. \[Directed by Hype CG, narrated by Bethany Cutmore-Scott, music by Gabriel Maia\].

## Lectures

1. [How do you know if you have a virus?](https://invisiblenetwork.ai/learn/ted/cella_wright_how_do_you_know_if_you_have_a_virus/05a41d63832d), 5 min (TED's player)