SARS-CoV-2 Transmission - Air distance, air currents, duration in air, humidity, airborne transmission, duration on objects and surfaces, floor
The coronavirus COVID-19 is affecting
213 countries and territories around the world and 2 international conveyances. The day is reset after midnight GMT+0. The list of countries and territories and their continental regional classification is based on the United Nations Geoscheme. Sources are provided under "Latest Updates". Learn more about Worldometer's COVID-19 data
NOTE from the Massachusetts Department of Public Health:
"Today, the Department of Public Health will begin reporting both confirmed and probable COVID-19 cases and deaths. This change is in accordance with guidance from the Centers for Disease Control to include “probable” COVID-19 cases and deaths in data collection and reporting efforts. This change will increase the number of cases and deaths reported in Massachusetts. Today’s newly reported totals are a result of a retrospective review of probable cases and deaths dating back to March 1, 2020.
Probable cases are individuals who have not been tested by the standard viral (molecular) test. They have either 1) had a positive antibody test and either had COVID symptoms or were likely to be exposed to a positive case or 2) did not have an antibody test but had COVID symptoms and were known to be exposed to a positive case. Probable cases also include individuals whose death certificate listed COVID-19 as a cause of death but who were not tested.
Also included is data on the total number daily and cumulative COVID-19 antibody tests performed.
Antibody tests are blood tests used to determine if a person had COVID-19 in the past and now has antibodies against the virus.
Molecular, or viral, testing, which is performed by nasal swab, is conducted to determine if an individual is currently infected with COVID-19.
Since the beginning of the pandemic, DPH has reported on the number of confirmed cases and deaths that had a POSITIVE COVID-19 molecular test result." [source]
NOTE on today's large increase in recoveries. Illinois has added Recoveries to their dashboard, specifically a "Recovery Rate" of 92% indicating that "Recovered cases are defined as persons with initial positive specimen collection date > 42 days who have not expired. Recovery rate is calculated as the recovered cases divided by the sum of recovered cases and deceased cases." This means the number of recovered is: deaths / 8 * 92 = 5,390 / 8 * 92 = 61,985