Maybe Thanksgiving is getting us sentimental, but
the concept of a vaccine is kind of...amazing? Someone injects a distorted
version of a virus into you and then your body learns how to defend against
it. It’s not not
magical.
Here’s how those
painful miracles of science come to be
The process that generates the lifesaving poky boys
is grounded in cold, hard science and logistics. But, it’s mind-numbingly complicated;
think Christopher Nolan film plus Gillian Flynn novel times your flightiest
friend’s romantic status.
From a business POV, it’s also extremely risky.
Regulators license the process behind making a vaccine in addition to the
biological product itself. That means that any major tweaks to that process
trigger another round of tire-kicking. As a result, the failure rate in
vaccine manufacturing is high and supply often runs short.
- Plus,
it’s not cheap. The total costs of vaccine development can run up to
$500 million, one study found.
Methodologies vary, but the overall breakdown goes
something like this:
Step 1: Create an antigen (a substance that
provokes your immune system). Scientists do this by literally growing it in
a cell—like the basil plant on your window, but tiny.
Step 2: Take the baby antigen out of the cell
where it was grown. Basil’s gotta become pesto at some point.
Step 3: Next, the antigen is purified through
processes that sound like words you’d make up when lying about doing
science homework: chromatography and ultrafiltration.
Step 4 (optional): In some cases, some extra
spices are added to strengthen the antigen, or to add shelf life.
Step 5: Distribution—mix up all the components
in vials or syringes, load those suckers on trucks, and get them in some
arms.
Vaccine
manufacturing is Isla de Muerta
It’s an island that cannot be found, except by
those who already know where it is. The field is dominated by legacy
players, because only those with significant existing scale can foot the
bill for the necessary raw material, facilities, regulatory compliance, and
labor.
- Did
you know there’s currently a shortage of
sand needed to make glass vials for vaccine storage? Or that one
ingredient used in vaccines comes from the bark of the Quillaja
saponaria Molina tree in South America that’s only harvested two
months of the year? Probably not, but Pfizer does.
Zoom out: The companies currently vying to get
a Covid-19 vaccine to market are pursuing different biological methods, in
the hopes that a “throw everything against the wall” approach will lead to
a few sticking.
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