Every Wednesday SFGATE will report the most recent seven-day averages for coronavirus hospitalizations and the percentage of positive tests in the San Francisco Bay Area of nine counties. Because raw case counts are often a function of testing, hospitalizations and test positivity are the two best metrics for measuring the spread of the virus in the region.
Hospitalizations are declining in Marin and Solano counties, and while hospitalizations continue to increase in other counties, most continue to trend slower rates of increase. The only counties that have seen a noticeably faster rate of increase over a two-week period are Alameda and Napa.
Here is a county-by-county look at hospitalization numbers and percent positivity. All data comes from each county’s websites and the state’s database for hospitalizations by county.
San Francisco (6,197 confirmed cases)
Seven-day average for hospitalizations on July 20: 96.6 patients (37.4 percent increase over a two-week period)
Seven-day average for hospitalizations on July 27: 105 patients (26.7 percent increase over a two-week period)
Seven-day average for positive test rate percentage on July 20: 4.2 percent
Seven-day average for July 26 positive test rate percentage *: 3.0 percent
* Complete San Francisco test data only runs through July 26.
San Mateo (5,306 confirmed cases)
Seven-day average for hospitalizations on July 20: 62.3 patients (37.5 percent increase over a two-week period)
Seven-day average for hospitalizations on July 27: 67.9 patients (39.7 percent increase over a two-week period)
Seven-day average for positive test rate percentage on July 20: 6.8 percent
Seven-day average for positive test rate percentage on July 27: 7.8 percent
Alameda (10,633 confirmed cases)
Seven-day average for hospitalizations on July 20: 162.3 patients (17.0 percent increase over a two-week period)
Seven-day average for hospitalizations on July 26 *: 181.4 patients (26.9 percent increase over a two-week period)
Seven-day average for positive test rate percentage on July 20: 5.4 percent
Seven-day average for positive test rate percentage on July 27: 4.3 percent
* The complete hospitalization data for Alameda only reach July 26.
Against Costa (7,304 confirmed cases)
Seven-day average for hospitalizations on July 20: 85 patients (73.5 percent increase over a two-week period)
Seven-day average for hospitalizations on July 27: 101 patients (42.2 percent increase over a two-week period)
Seven-day average for positive test rate percentage on July 20: 6.6 percent
Seven-day average for positive test rate percentage on July 27: 7.5 percent
Santa Clara (9,359 confirmed cases)
Seven-day average for hospitalizations on July 20: 150.9 patients (78.8 percent increase over a two-week period)
Seven-day average for hospitalizations on July 27: 174.3 patients (47.6 percent increase over a two-week period)
Seven-day average for positive test rate percentage on July 20 *: 3.9 percent
Santa Clara has not updated its test data since July 20.
Marin (2,649 confirmed cases)
Seven-day average for hospitalizations on July 20: 19 patients (18.8 percent increase over a two-week period)
Seven-day average for hospitalizations on July 27: 15 patients (decrease of 28.9 percent in a two-week period)
Seven-day average for positive test rate percentage on July 20 *: 8.5 percent
* Marin County has not updated its test data since July 20.
Solano (3,388 confirmed cases)
Seven-day average for hospitalizations on July 20: 50.4 patients (35.8 percent increase over a two-week period)
Seven-day average for hospitalizations on July 27: 48 patients (19.4 percent increase over a two-week period)
Seven-day average for positive test rate percentage on July 20: 8.2 percent
Seven-day average for positive test rate percentage on July 27: 5.8 percent
Napa (806 confirmed cases)
Seven-day average for hospitalizations on July 20: 7.4 patients (10.8 percent increase over a two-week period)
Seven-day average for hospitalizations on July 27: 11.9 patients (47.5 increase over a two-week period)
Seven-day average for positive test rate percentage on July 20: 3.2 percent
Seven-day average for positive test rate percentage on July 27: 5.0 percent
Sonoma (2,662 confirmed cases)
Seven-day average for hospitalizations on July 20: 53 patients (140.9 percent increase over a two-week period)
Seven-day average for hospitalizations on July 27: 59.4 patients (59.2 percent increase over a two-week period)
Seven-day average for positive test rate percentage on July 20: 5.9 percent
Seven-day average for positive test rate percentage on July 27: 6.0 percent
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Eric Ting is a SFGATE reporter. Email: [email protected] | Twitter: @_ ericting
