The cities of Atlanta and Sandy Springs together saw 484 net new COVID-19 diagnoses between July 8 and July 10 update reports from the Fulton County Board of Health.

The number of cases increased in all of the main local ZIP codes. The 14-day trend was up by at least 123% in both cities and rose in all but one of the ZIP codes.

A chart of COVID-19 diagnoses by city in Fulton County as shown in a July 10 Board of Health report.

As of July 10, the part of Atlanta within Fulton County had 4,750 COVID-19 diagnoses, up from 4,338 on July 8. Sandy Springs had 938 diagnoses, up from 866. The July 8 report had listed Sandy Springs as having 914 diagnoses at that time, a number that appears to have been lowered as city and ZIP code of patients were clarified.

Atlanta remains the number one city in the county for COVID-19 diagnoses at 47.4% of the total, and Sandy Springs remained third with 9.4% of the total.

The 14-day trend in new COVID-19 in each city is charted in the report, calculated by comparing the 14 days preceding the previous seven days with the 14-day period before that. In Atlanta, the 14-day trend was up by 264.9% and in Sandy Springs the 14-day trend was up by 123.7%.

To view the full reports, see the county website here.

The report does not state whether the numbers reflect the coronavirus’s spread, the state of testing, or both.

The statistics, which are based on patients’ home addresses, are not completely accurate due to such factors as a large number of patients whose cities or ZIP codes are unknown. Of those diagnosed, their ZIP code was unknown in 449 cases and their home city was unknown in 972 cases. All numbers are preliminary and may be adjusted later, including through “data cleaning” — the reassignment of some cases to a different ZIP code or city after further analysis.

The total number of confirmed COVID-19 diagnoses in the county as of July 10 was 10,021, up from 9,374 on July 8. Of those, 320 are reported as having died. About 12.3% of patients were hospitalized and about 3.2% died. Countywide, residents and staff of long-term care facilities account for about 13% of diagnoses and 56% of deaths.

The number of total diagnosed cases in the main ZIP codes in Buckhead and Sandy Springs between the July 8 and July 10 reports were as follows. The 14-day trend was up in all of the ZIP codes except for 30350, which was down by roughly 21%.

Buckhead ZIP codes

30305: Total: 327 (up from 305)

30326: Total: 80 (up from 78)

Sandy Springs ZIP codes

30328: Total: 263 (up from 244)

30350: Total: 227 (up from 217)

Buckhead and Sandy Springs combined ZIP codes

30327: Total: 222 (up from 209)

30342: Total: 465 (up from 431)

John Ruch is an Atlanta-based journalist. Previously, he was Managing Editor of Reporter Newspapers.