A transmission electron microscope image shows SARS-CoV-2, also known as the 2019 novel coronavirus, which causes COVID-19, isolated from a patient in the United States.
Note the crown-like spikes on the outer edge of the virus, hence the term "coron (NIAID-RML)PHILADELPHIA - The surge in new COVID-19 cases in Pennsylvania continued on Saturday as state health officials reported more than 8,000 new positive tests.
According to the state's latest data, the number of new infections grew by 8,053 which pushed the cumulative total to 351,667 positive tests.