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Luca Dellanna Profile picture
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21 Nov, 4 tweets, 1 min read
Because cases diffuse.

Take Italy: first wave was concentrated in Bergamo (North), if you lived in Southern Italy the chances that you knew someone that could infect you were very low.

But then cases diffused, and the chances you know someone you can take it from increase.
In two words: the surface area of the virus increased
Also other reasons, of course: Delta, complacency, etc.

But IMHO the most underrated one is: the surface area of the virus increased.
And no, it’s not just because tests increased. The percentage of tests returned positive changes wildly as waves come and go. Example below for Italy

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More from @DellAnnaLuca

Luca Dellanna Profile picture
20 Nov
Apparently, there are COVID-parties in Austria, Germany, and NE Italy, where young people get together with infected thinking that “getting the virus is better than the vaccine.”

Terrible: not only it’s false, but they also create problems for everyone around them.
One thing is saying “I’m afraid of vaccine side effects so I use masks and other precautions to avoid getting sick” (legitimate)

Another things is saying “I proactively expose myself to the infected” (dumb)
Yes but proactively exposing yourself to a danger to (perhaps) avoid consequences from future exposures to the same danger is idiotic

(with a possible exception for controlled microdoses, but that’s not what’s going on here)
Read 4 tweets
Luca Dellanna Profile picture
17 Nov
A VACCINATED ELDER IN GERMANY TODAY IS ONLY 46% LESS LIKELY OF DYING OF COVID COMPARED TO ONE YEAR AGO

thread with data and explanations

TL;DR: the vaccine reduced risk of dying conditional of catching the virus, but the virus spread and this year you're more likely to catch it
Another data point: the average unvaccinated adult German (18-59yo) is THREE TIMES more likely of dying of COVID today than one year ago. Even though the 2/3 of the population that's vaccinated should protect them.

Because there are more cases → higher risk of catching it
Herd immunity works in the measure the herd isn't infected.

If the vaccine meant that the vaccinated cannot get sick or transmit the virus, and if the virus hadn't spread wildly, then herd immunity would protect the community.

But it's not what's happening.
Read 10 tweets
Luca Dellanna Profile picture
16 Nov
ENGAGING & RETAINING TALENT

Next week, I'll hold a free one-hour online seminar on employee engagement and retention.

Register using the link below
(more info in the thread)

us02web.zoom.us/meeting/regist…
In the one hour, I will cover two principles and three practical actions that will help with engaging and retaining your workforce.

It's not a full coverage of everything there's to know about the topic, but it will be practical enough to give you some concrete results.
In the Q&A at the end, you will also have an opportunity to ask me about any specific problems you are encountering on the topic.

If you cannot make it live, I will share an excerpt of the session on my mailing list (Luca-dellanna.com/newsletter)
Read 4 tweets
Luca Dellanna Profile picture
15 Nov
PRE-MORTEMS

- Imagine your key employee just handed you his resignation letter. Why would it be?

- Imagine your team just called you in the middle of the night. Why would it be?

- Imagine your key client just passed to a competitor. Why would it be?

Luca-dellanna.com/pre-mortems
POST-mortems are asked after the problem hurt you. "Why did the project fail, and what can we do better next time?"

PRE-mortems are asked before the problem occurs. "Let's imagine the project failed. What could have happened?"

With pre-mortems, you have time to react.
Pre-mortems don't have to be just negative. They can be positive too, such as: "Let's imagine that the project was wildly successful, well above our expectations. What would we have done today that made it succeed?
Read 4 tweets
Luca Dellanna Profile picture
15 Nov
PRE-MORTEMS

- Imagine your key employee just handed you his resignation letter. Why would it be?

- Imagine your team just called you in the middle of the night. Why would it be?

- Imagine your key client just passed to a competitor. Why would it be?

Luca-dellanna.com/pre-mortems
POST-mortems are asked after the problem hurt you. "Why did the project fail, and what can we do better next time?"

PRE-mortems are asked before the problem occurs. "Let's imagine the project failed. What could have happened?"

With pre-mortems, you have time to react.
Pre-mortems don't have to be just negative. They can be positive too, such as: "Let's imagine that the project was wildly successful, well above our expectations. What would we have done today that made it succeed?
Read 4 tweets
Luca Dellanna Profile picture
14 Nov
More indication that the vaccinated are more similarly contagious as the unvaccinated than thought (but for shorter time and, of course, less likely to be hospitalized and die)
On the one hand, similar viral load doesn’t necessarily mean similar contagiousness, and household studies have the property that rate of viral spread matters less than in other spaces.

On the other hand, one more indication that vaccines aren’t silver bullets.
(I rephrased and integrated the tweet posted 20 mins ago for completeness, ht @maintcraft)
Read 4 tweets

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