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A pandemic on the rise: Charts reveal how virus has spread at different rates in two counties

A look at how the coronavirus is growing in Santa Clara, San Mateo counties

Palo Alto Online, the Mountain View Voice and the Almanac have put together a series of interactive charts to help you understand the proliferation of COVID-19 infections on the Peninsula, which you can find on our Atavist page. These charts will be updated as more information is released.

Ever since Santa Clara County reported the first patient with the coronavirus in the Bay Area on Jan. 31, the disease has spread throughout all nine counties in the region, with the number of confirmed cases escalating at a rapid pace.

Since officials issued a shelter-at-home order, cases in the Bay Area jumped from 798 on March 17 to 10,089 on May 12, with Santa Clara County accounting for nearly a quarter of the region's patients and more than a quarter of the region's 368 deaths. San Mateo County reported the fourth-highest number of cases in the region after Alameda County and San Francisco. County health leaders have said the number of confirmed cases is expected to rise as more testing becomes available.

Editor's note: This page will no longer be updated as of May 14.

Find comprehensive coverage on the Midpeninsula's response to the new coronavirus by Palo Alto Online, the Mountain View Voice and the Almanac here.

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A pandemic on the rise: Charts reveal how virus has spread at different rates in two counties

A look at how the coronavirus is growing in Santa Clara, San Mateo counties

by / Palo Alto Weekly

Uploaded: Tue, Mar 31, 2020, 10:14 am
Updated: Thu, May 14, 2020, 10:51 am

Palo Alto Online, the Mountain View Voice and the Almanac have put together a series of interactive charts to help you understand the proliferation of COVID-19 infections on the Peninsula, which you can find on our Atavist page. These charts will be updated as more information is released.

Ever since Santa Clara County reported the first patient with the coronavirus in the Bay Area on Jan. 31, the disease has spread throughout all nine counties in the region, with the number of confirmed cases escalating at a rapid pace.

Since officials issued a shelter-at-home order, cases in the Bay Area jumped from 798 on March 17 to 10,089 on May 12, with Santa Clara County accounting for nearly a quarter of the region's patients and more than a quarter of the region's 368 deaths. San Mateo County reported the fourth-highest number of cases in the region after Alameda County and San Francisco. County health leaders have said the number of confirmed cases is expected to rise as more testing becomes available.

Editor's note: This page will no longer be updated as of May 14.

Find comprehensive coverage on the Midpeninsula's response to the new coronavirus by Palo Alto Online, the Mountain View Voice and the Almanac here.

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Comments

can more be said on theories why?
North Bayshore
on Mar 31, 2020 at 3:19 pm
can more be said on theories why?, North Bayshore
on Mar 31, 2020 at 3:19 pm
7 people like this

Can more be said on theories why we are increasing higher than other counties?


laura s
North Whisman
on Mar 31, 2020 at 4:01 pm
laura s, North Whisman
on Mar 31, 2020 at 4:01 pm
6 people like this

I would like to see stats: ages, male, female, race, etc.


Wait two weeks
Another Mountain View Neighborhood
on Mar 31, 2020 at 4:29 pm
Wait two weeks, Another Mountain View Neighborhood
on Mar 31, 2020 at 4:29 pm
10 people like this

Everything is a just a quick snapshot in time of an ever changing picture.
SCC was about two weeks ahead of SMC when this all started.
Wait two weeks and the chart will look different. SMC will catch up and SCA will hopefully be trending down.


MtnView1
Old Mountain View
on Mar 31, 2020 at 4:51 pm
MtnView1, Old Mountain View
on Mar 31, 2020 at 4:51 pm
9 people like this

I'm not sure that this is the correct way to look at these data. By plotting on a scale by day (X-axis), the fact that the "seeding" of the virus could have been at different times in the two counties is ignored and thus incorrect. This is borne out by the fact that Santa Clara's first case was on Jan 31 and San Mateo's was on Mar 2. What matters for spread in the community is once seeding takes place. If you look at the San Mateo plot and move it to the left about five days, it is almost the same shape and slope characteristics as the Santa Clara plot, indicating that the spread rate isn't all that different in the counties, just that the initial seeding was earlier in Santa Clara.


Dan Waylonis
Jackson Park
on Mar 31, 2020 at 6:53 pm
Dan Waylonis, Jackson Park
on Mar 31, 2020 at 6:53 pm
18 people like this

The graph of absolute counts isn't really a good comparison. San Mateo population is 760K people. Santa Clara population is 1.9M people. So it's not surprising if the count for Santa Clara is 2.5x that of San Mateo.


So -called experts
Castro City
on Mar 31, 2020 at 7:13 pm
So -called experts, Castro City
on Mar 31, 2020 at 7:13 pm
26 people like this

Amazed at how poor our so-called experts lack statistical skills other than being able to graph data using excel. A proper graph should be stated in terms of per capita to control for population differences. A betta comparison of curves would adjust the starting dated in order to compare the process across areas.


SCC twice the size of San Mateo Cty
Whisman Station
on Apr 1, 2020 at 8:06 am
SCC twice the size of San Mateo Cty, Whisman Station
on Apr 1, 2020 at 8:06 am
10 people like this

The headline implies that the two counties are comparable. Santa Clara County is not at all comparable to San Mateo County. SCC county with pop of 2M includes city of San Jose, 3rd largest city in CA (Pop. over 1M). SCC is 3 times the size of San Mateo Country (land mass). So I would expect SCC to have more cases, increasing at a higher rate.


Identical
another community
on Apr 2, 2020 at 9:30 pm
Identical, another community
on Apr 2, 2020 at 9:30 pm
8 people like this

Am I missing something? The per capita plots map dead on top of each other. Title should read “ Charts reveal how virus has spread at identical rates in two counties.l


Tired of distancing? Come to Rancho!
Another Mountain View Neighborhood
on Apr 4, 2020 at 5:36 am
Tired of distancing? Come to Rancho!, Another Mountain View Neighborhood
on Apr 4, 2020 at 5:36 am
10 people like this

Most beach communities are pleading with people not to drive to the beach if they cannot walk or ride their bike.

MidPen's large open parking lot policy fits better with this thinking:
Web Link

Hate this guy's take on things? Complain to MidPen about keeping their large lots open


what's the real 'ax to grind' here?
St. Francis Acres
on Apr 4, 2020 at 10:48 am
what's the real 'ax to grind' here?, St. Francis Acres
on Apr 4, 2020 at 10:48 am
2 people like this

> Tired of distancing? Come to Rancho!

Aren't you tired *yet* of spamming every thread on these websites?


Gilroy Runner
Another Mountain View Neighborhood
on Apr 5, 2020 at 7:04 am
Gilroy Runner, Another Mountain View Neighborhood
on Apr 5, 2020 at 7:04 am
1 person likes this

Trying to get quick info on the lot situation at Rancho. Are they open? I'm going stir crazy and have always wanted to see that park.


Gilroy Runner
another community
on Apr 5, 2020 at 7:58 am
Gilroy Runner, another community
on Apr 5, 2020 at 7:58 am
1 person likes this

No need to reply, got the answer. See you on the trails!


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