California Coronavirus Map and Case Count

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New cases
7-day average
Total reported On Feb. 28 14-day change
Cases 3.5 million 3,495 –45%
Deaths 52,213 234 –28%
Hospitalized 5,674 –41%

Day with reporting anomaly.

Hospitalization data from the Covid Tracking Project; 14-day change trends use 7-day averages.

At least 234 new coronavirus deaths and 3,495 new cases were reported in California on Feb. 28. Over the past week, there has been an average of 5,360 cases per day, a decrease of 45 percent from the average two weeks earlier.

Average daily cases per 100,000 people in past week
Few or no cases
Share of population with a reported case
No cases reported
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Sources: State and local health agencies. Population and demographic data from Census Bureau.
About this data For total cases and deaths: The map shows the known locations of coronavirus cases by county. Circles are sized by the number of people there who have tested positive or have a probable case of the virus, which may differ from where they contracted the illness. For hot spots: The hot spots map shows the share of population with a new reported case over the last week.

As of Monday morning, there have been at least 3,568,900 cases and 52,213 deaths in California since the beginning of the pandemic, according to a New York Times database.

Reported cases and deaths by county

This table is sorted by places with the most cases per 100,000 residents in the last seven days. Charts are colored to reveal when outbreaks emerged.

Total
cases
Per 100,000 Total
deaths
Per 100,000 Daily avg.
in last
7 days
Per 100,000 Daily avg.
in last
7 days
Per 100,000 Weekly cases per capita
Fewer More
California 3,568,991 9,033 52,213 132 5,360 14 298.2 0.75
March 1
Feb. 28
California heatmap
Inyo › 1,275 7,068 37 205 7 39 0.4 2.38
Inyo heatmap
Merced › 28,971 10,433 397 143 69 25 1.3 0.46
Merced heatmap
Kern › 103,295 11,475 851 95 222 25 11.1 1.24
Kern heatmap
Stanislaus › 56,132 10,194 946 172 134 24 2.9 0.52
Stanislaus heatmap
Del Norte › 1,001 3,599 5 18 6 22
Del Norte heatmap
Tuolumne › 3,950 7,251 59 108 11 21 0.4 0.79
Tuolumne heatmap
Lassen › 5,601 18,320 19 62 6 20
Lassen heatmap
Kings › 22,060 14,424 220 144 29 19 0.7 0.47
Kings heatmap
Siskiyou › 1,755 4,031 14 32 8 18 0.1 0.33
Siskiyou heatmap
Madera › 15,467 9,831 209 133 28 18 1.1 0.73
Madera heatmap
About this data Weekly cases per capita shows the share of population with a new reported case for each week. Weeks without a reported case are shaded gray. The daily average is calculated with cases and deaths that were reported in the last seven days.

To Our Subscribers

The public, medical researchers, and government agencies continue to rely on our comprehensive tracking of the pandemic. Thank you for helping us uncover the facts.

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The New York Times is engaged in a comprehensive effort to track details about every reported case in the United States, collecting information from federal, state and local officials around the clock. The numbers in this article are being updated several times a day based on the latest information our journalists are gathering from around the country.

The New York Times has found that official tallies in the United States and in more than a dozen other countries have undercounted deaths during the coronavirus outbreak because of limited testing availability.

Daily reported new cases

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7-day average

Daily reported deaths

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These are days with a reporting anomaly. Read more here. Note: The seven-day average is the average of a day and the previous six days of data.

Daily case and death reports show the severity of the pandemic over time. The picture can be put into further context by considering the number of tests performed and people hospitalized.

Daily reported specimens tested

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Backlogged negative tests
New tests
7-day average

Hospitalizations

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Covid patients in hospitals that day
7-day average
These are days with a reporting anomaly. Read more here. Source: Testing and hospitalization data from the Covid Tracking Project.
About this data Currently hospitalized is the number of patients with Covid-19 reported by the state to be in a hospital on that day. Dips and spikes could be due to inconsistent reporting by hospitals. Tests represent the number of individual P.C.R. viral test specimens reported tested that day.

If the previous level of testing was low, and hospitalizations are not increasing, a rise in daily cases could be explained as a result of increased testing. If daily tests have been increased and cases and hospitalizations have fallen or stayed low, that is a sign that the situation is improving or under control. Hospitalizations and deaths usually lag behind new cases, as it takes time for symptoms to develop and worsen.

Because the definitions used for testing and hospitalization data vary between states, it is not always possible to compare that data in one state to the figures reported in another.

We’re tracking restrictions in California »

Since March, The Times has paid special attention to cases in nursing homes, food processing plants, correctional facilities and now at colleges and universities. Information on cases linked to these places comes from official releases by governments, companies and institutions directly. The Times is publishing lists of groupings of 50 or more cases related to a specific site, workplace, school or event.

Cases connected to Cases Location
+ Prisons and jails 82,487 cases at 69 prisons
+ Nursing homes 72,455 cases at 664 facilities
+ Colleges and universities 9,065 cases at 79 schools
+ Other 7,346 cases at 74 clusters
+ Food processing facilities 1,768 cases at 9 facilities

The counts in this table of coronavirus cases at individual nursing homes were last updated as recently as Jan. 12, 2021. Since then, we have continued to update state-level totals for cases and deaths in long-term care facilities.

About the data

In data for California, the Times primarily relies on reports from the state, as well as health districts or county governments that often report ahead of the state. California typically releases new data each day. Weekend counts may be lower because fewer sources report to the state. The state reports cases and deaths based on a person’s permanent or usual residence.

The Times has identified the following reporting anomalies or methodology changes in the data:

April 4: California reported a large batch of backlogged negative tests.

April 22: California reported a large batch of backlogged negative tests.

July 1: Data released by California included cases from a testing backlog.

Dec. 16: California announced a backlog of about 12,000 cases from previous days.

Feb. 24: Los Angeles County added many deaths from December and January after reviewing vital records.

New cases reported during the first two weeks of August were artificially low while the state resolved a technical issue with its data system. Some counties temporarily stopped reporting new data during this time.

Counts for Alameda County include cases and deaths from Berkeley and the Grand Princess cruise ship.

The tallies on this page include probable and confirmed cases and deaths in some counties.

Confirmed cases and deaths, which are widely considered to be an undercount of the true toll, are counts of individuals whose coronavirus infections were confirmed by a molecular laboratory test. Probable cases and deaths count individuals who meet criteria for other types of testing, symptoms and exposure, as developed by national and local governments.

Governments often revise data or report a single-day large increase in cases or deaths from unspecified days without historical revisions, which can cause an irregular pattern in the daily reported figures. The Times is excluding these anomalies from seven-day averages when possible.

Read more about the methodology and download county-level data for coronavirus cases in the United States from The New York Times on GitHub.