Bob Wachter Profile picture
Sep 25, 2020 25 tweets 10 min read Read on X
1/ Covid (@UCSF) Chronicles, Day 191

Wonderful @UCSF medicine grand rounds today, focused on San Francisco’s remarkable Covid response. It’s here: tinyurl.com/y3uhy6tz.

As I said on Monday, if U.S. had had SF’s Covid mortality rate, we'd be at 36,101 deaths, not 200,000.
2/ San Francisco continue to do quite well, even as U.S. (particularly Midwest; a bit in South & West, Fig on L) begins to surge. @UCSFHospitals, only 15 Covid pts, 5 on vents (Fig R). Test positivity 3.3% in pts w/ symptoms, 0.53% in those without – both lowest # 's since June.
3/ San Francisco: still under 100 (99) deaths since the start; remarkable. 64 cases/day (Fig on L). Hospitalizations also at 64 – both numbers not as good as they were in March-June but about half of the July peak (Fig L).) Test positivity rate: 2.1%, the lowest % since June.
4/ On to Grand Rounds:

@ 3:30: @UCSF Chancellor Sam Hawgood introduced Mayor @LondonBreed. “San Francisco is fortunate to have a mayor who believes in what science tells us… And we’re very fortunate to have a mayor who strongly believes in the role of public health.”
5/ @ 8:00: Mayor @LondonBreed: “We have seen how our phenomenal medical professionals have risen to the occasion, and the direct impact of @UCSF as a leading research institution and partner…” through testing, contact tracing, clinical care, and by increasing its bed capacity.
6/ More from Mayor @ 10:30: “This virus… targets disparities in our society. It preys on people who have poor health due to historical inequities…, people who live in crowded conditions…,people whose immigration status makes them weary of speaking to public health officials…”
7/ @ 18:00: I asked the Mayor what led her to her early shelter-in-place action. “I remember the day [Colfax & Aragon] came into my office…" Despite great hospitals, “w/ a surge, we couldn't handle it, people will be turned away at the door, & people will die at alarming rates.”
8/ @ 21:00: I asked Breed what about her background explained her courage in shutting down early. “I’m honored & blessed & surprised that I’m mayor. All I can think about is, ‘What would I want my mayor to do… We’ve got to do a press conference, we have to let the people know.”
9/ @ 22:30: “It was hard, because I knew with the hotels & tourism & the birthday parties & the weddings… people had plans…” But, “I grew up in a community where… I lost a lot of friends to gun violence. I kept thinking, ‘How could we have prevented that from happening?’”
10/ @ 25:00: One key to SF’s success was communication, “Not just communicating from the perspective of a doctor… but how do you communicate from the perspective of ‘how they get it.’” Came up with creative solutions, including embedding an “equity team” in emergency ops center.
11/ @ 26:30: Brought on @SF_DPH head Grant Colfax & health lead Tomas Aragon. Mayor told story about walking into her neighborhood grocery, seeing lots of unmasked people. “I called Dr. Colfax & said, ‘get a health person over there now… we need to shut the grocery store down.’”
12/ @ 28:00: Mayor Breed: “We did all these great things, but the disparities – particularly in the Latino community – didn’t change. What that means is that we've not done enough.” Today, she announced a big new investment in testing, contact tracing, food security, & outreach.
13: @ 31:00, @SF_DPH chief Grant Colfax describes March meetings – says that HIV taught him importance of early action. He looked at the numbers, and at the international situation: “There wasn’t a jurisdiction that appeared to have overreacted… the virus was always ahead.”
14/ @ 35:00: I asked Tomas re: decisions he had to make in May (vs March). “It’s easy to shut down, it’s hard to open up.” To open up, “it’s about the economy, jobs – it’s about the complexity of society that we didn’t understand.” Needed to spend more time w/ business community.
15/ @ 38:30: Fascinating discussion with Paul Volberding re: early days of HIV. Things "seemed to be moving fast," but in retrospect it was “glacially slow” (no preprints, no social media). Tough decision to close bathhouses in SF seemed similar to decisions today about schools.
16/ @ 41:00: I asked Colfax re: some dire predictions he made in June when surge began tinyurl.com/yyvt8qmj. “It’s exactly that tension: making sure people understand the possibilities, while working against prevention fatigue.” But the numbers/concern he described were real.
17/ @ 47:00: George Rutherford’s lesson from HIV and Covid: “…To realize how good the @SF_DPH is.” The health department produces lots of academic output, and enjoys a very strong relationship with @UCSF: "Everybody picks up the phone when you need help."
18/ @ 48:45: Diane Havlir, “We learned in AIDS that the trifecta of the public health dept. leadership, academic centers, & the community all working together – that’s the magical formula.” Not everybody agrees with each other all the time, but “everybody needs to have a voice.”
19/ @ 53:30: Re: U.S. response. Tomas: “(Federal) govt. is the only entity that has the ability to coordinate activity across all sectors.” While early on he “really paid attention” to daily calls w/ @CDCgov, now not so much. Ditto CDC recs: double check everything from CDC. Sad.
20/ @ 56:00: I asked Tomas if he’s considered fines for folks who don’t follow rules (eg, masks). Answer: no (though yes for businesses that don’t comply). “We’ve implemented a lot of punitive restrictions – shutting down the economy, schools – people are really stressed out….”
21/ @ 57:00: I asked about schools. Tomas: “They have become my True North, because in order to open up schools, you have to get community transmission down....It’s an equity question." The city is now doing site visits of every school. “A very concrete way of being anti-racist.”
22/ @ 1:02:00: Why has SF’s mortality rate been so low? Havlir: thinks it’s quality of care, because we weren’t overwhelmed, had time to apply evidence. Also, no big outbreaks in SF nursing homes: we “jumped on” outbreak at Laguna Honda – remarkably, no patient deaths there.
23/ @ 1:06:00: I asked Volberding re: nat'l politics of HIV vs now. Although Reagan didn’t utter word “AIDS” until 6 yrs into HIV, “things were happening, grants were funded” & “CDC was pure.” Now, president talks about Covid all the time, but the response is dysfunctional.
24/ A “Wow, am I old” moment for me: @ 1:14:30, Volberding observes that when HIV first hit (1981), the polio epidemic had been ~40 yrs earlier. And we never thought about it.

Now, HIV was 40 yrs ago. “We forget too soon…the lessons from each epidemic are remarkably similar.”
25/ A great session, again here: tinyurl.com/y3uhy6tz Well worth watching. Makes me proud to live in SF and work @UCSF.

Next Thursday, we'll do a non-Covid grand rounds. Back with a Covid update on Thursday October 8th. I'll keep tweeting in between.

Until then, stay safe.

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More from @Bob_Wachter

Dec 18, 2023
Covid (@UCSF) Chronicles, Day 1371
I haven’t X'ed much about Covid lately, mostly because things are fairly stable. But a lot of folks have asked me what I’m doing, Covid-wise.
So today: how I’m acting, & why. Graphic below shows my general approach; more details follow. (1/25) Image
How am I acting currently? Given a moderate uptick in Covid over the past two months, I’m back to masking in crowded and poorly ventilated places, particularly when I don’t need to talk. When I do mask, I always use an N95; I see no reason to wear a less effective mask. (2/25)
Examples of where I currently mask: crowded stores, airplanes or trains; elevators; and theaters. But given that today’s uptick is only moderate, I’m still OK with indoor dining (though will opt for outdoor if conditions allow) and for going maskless at holiday parties. (3/25)
Read 25 tweets
Aug 18, 2023
Covid (@UCSF) Chronicles, Day 1249
While good data are far harder to come by than in the past, it’s clear that we’re experiencing another Covid uptick. Today: what that means and how you might choose to alter your behavior in response. (1/25)
First, the evidence for the uptick (I don’t say “surge” since I associate that with the massive surges of the past):
This curve of hospitalizations (a reasonable proxy for the amount of Covid in the community) shows a definite, but relatively mild, upward trend. (2/25) Image
Alas, one can't look at any single measure to quantify an uptick anymore. But all arrows now point in the same direction: up (⬆ wastewater,⬆ hospitalizations,⬆ deaths,⬆test positivity). Even my fave measure, @UCSFHospitals’ asymptomatic test positivity rate, is no… (3/25)
Read 25 tweets
Jul 13, 2023
Until this week, I remained a NoVid, which I chalked up to being fairly cautious, fully vaxxed & a bit lucky.
This week my luck ran out. My case is a cautionary tale, particularly for the “just a cold” folks. Mine definitely was not...I literally have scars to show for it. (1/22)
I’ve got my 2nd bivalent in April, so my protection against a severe case was still strong, but the 2-3 month window of protection vs. getting Covid had passed. I've let down my guard a bit: still masking on planes & in crowded rooms, but I do now eat and drink indoors. (2/22)
This week, I was on clinical duty @UCSFHospitals. We are still required to mask in patient areas (good!). I felt fine until Sunday afternoon when, after leaving the hospital, I noticed a dry cough. By Sunday night, I felt flu-ish, with a sore throat, fever, and chills. (3/22)
Read 22 tweets
May 23, 2023
Covid (@UCSF) Chronicles, Day 1161
With the Pub Health Emergency over, it's a good time to update you on my view of Covid & my current approach to Covid behavior – which is now based on 2 principles:
1) Is the risk worth it?
2) Can I live w/ the behavior for the long haul? (1/25)
First, let’s review today's situation. Since Omicron's emergence in 11/21, the biggest surprise has been the absence of surprises. Yes, we’ve seen a few variants that led to mild surges, but we haven’t had to interrogate our Greek dictionary for a new letter for 18 months. (2/25)
mRNAs still work great in preventing severe infection, and Paxlovid, home tests, & ventilation still work well too. Long Covid remains a concern, but we know that both vax & Pax lower its frequency, that most (though definitely not all) folks… (3/25) jwatch.org/na55957/2023/0…
Read 25 tweets
Feb 17, 2023
Important @TheLancet systematic review finds Covid infection confers robust & long-lasting (good at 40 weeks) protection vs both symptomatic & severe Covid infection.(Weaker w/ Omicron, but still good.)
thelancet.com/journals/lance…
How will results influence my behavior/thinking?(1/7)
a) I've been considering a Covid infection to be the equivalent of a booster in terms of protection against reinfection & severe disease (hospitalization/death). These study results indicate that it is at least that good, maybe even a bit better... (2/7)
b) We've been headscratching about why XBB variant didn't cause more of a surge, despite low uptake of the bivalent booster. It may be that immunity from all those 2022 Omicron infections kept it at bay (that's informed speculation – Lancet study ended before XBB spike)... (3/7)
Read 7 tweets
Jan 19, 2023
Covid (@UCSF) Chronicles, Day 1038
Some folks continue asking what I'm doing viz Covid behavior...
Answer: I'm changing my behavior. In the Bay Area, I'm now OK with indoor dining & removing my mask for small group gatherings.
I haven't changed, the risk has. Here's how: (1/25)
Specifically, I haven't changed my perspective on balancing prudent caution with everyone's (including my) desire for "normal."
But, in the Bay Area at least, the Covid risk has come down considerably, and, by my way of thinking, this allows for a more permissive approach.(2/25)
Where I'm coming from:
1) I'm 65 & haven't had Covid
2) I want to live as fully as I can, but am comfortable taking reasonable steps to avoid infection
3) I'm fully vaxxed & had bivalent in Sept
4) My main fear is Long Covid, which I peg at ~5% probability per Covid case. (3/25)
Read 25 tweets

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