Juan Guaido addresses a crowd of supporters on Wednesday. Photo: Federico Parra/AFP/Getty Images
Venezuelan opposition leader Juan Guaidó declared himself the country's interim president during a massive opposition rally in Caracas Wednesday as tens of thousands of Venezuelans took to the streets to protest the government of President Nicolas Maduro.
Driving the news: The move led President Trump to announce that he had officially recognized Guaido as Venezuela's interim leader.
How sick a person gets from a virus can depend onhow much of the pathogen that person was exposed to and how much virus is replicating in their body — questionsthat are still open for the novel coronavirus.
Why it matters: As people try to balance resuming parts of their daily lives with controlling their risk of COVID-19, understanding the role of viral load could help tailor public health measures and patient care.