A Covid vaccine that’s in development could, potentially, create sterilizing immunity.
Sterilizing immunity? That’s the kind that prevents infection, which means a disease not only can’t get you sick, it also can’t use you to pass itself along to anyone else. If we could get enough people vaccinated with a sterilizing vaccine, we could stop this sumbitch in its tracks.
The snag, of course, is hidden in that word potentially. The thing’s still in development. But if all goes well, it could work on both the existing variants and any new ones and could create immunity even in people whose immune systems sleep through the current vaccines, through bouts of Covid itself, and through math class.
“The SARS-CoV-2 subunit vaccine (PreS-RBD) developed at MedUni Vienna is based on a structurally folded fusion protein consisting of two receptor binding domains (RBD) of the SARS-CoV-2 virus and the PreS antigen from hepatitis B, which serve as immunological carriers for each other, thereby strengthening the immune response.”
Allow me to translate that for you: It’s magic. Don’t worry about it. Although you might want to know that it involves a series of shots to build up to full immunity, and the first trials could start this year. But that depends on funding.
What doesn’t depend on funding?
Hmm. Dunno. As society’s organized, not much.
Why do I ask so many questions? They’re a cheap and easy way to organize a piece of writing.
See? Even that depends on funding.
A second shred of hope is that researchers have found a monoclonal antibody that could potentially be a treatment for all Covid variants as well as for SARS and MERS (if they reappear), and for some versions of the common cold. But there’s that word potentially again. So far, it’s gone through animal studies. Next they have to capture some humans and test it on them.
It’s being combined with another monoclonal antibody, and the two together are going by the name AR-701 cocktail right now, but before they’re released into the wild someone will have to give them a less pronounceable name to make them sound more scientific.
The plan is for people to inhale it, and it could–again, that word–potentially last for a year.
Covid and male fertility
A very (very) small study raises the possibility that catching Covid could have long-term effects on male fertility.
Long-term effects? When someone says that,they’re never talking about good long-term effects. In this case, it means that men who had recovered from Covid had lower sperm counts, more misshapen sperm, and sperm with lower motility than the comparison group.
Again, it was a small study, so don’t go off the deep end with it. But I can’t help thinking that if you want to discombobulate someone who’s pounding the table about vaccines messing with women’s fertility–
Nah. I’m not going to suggest that. I’ll leave it to you to sink that low.
News about Covid tests
Two rapid, accurate Covid tests are in development. I’ve written that sentence so many times before, changing only the number at the beginning, that I’m not even going to give you the details. But testing’s another area where–out of sight of the general public–work’s going on that could have an impact on the way this mess plays out.
Covid and the sense of smell
Omicron’s less likely than the Delta variant to mess up the senses of smell and taste, but a failed attempt to lower people’s viral load–that’s how much Covid they carry around–turned out to protect patients’ sense of smell and taste. It also left them less tired than the patients who got a placebo.
They were using a drug called camostat mesylate, and it’s not clear yet whether it would help restore smell and taste to people who’ve lost them. You can live without both of them, but taste and smell are not minor losses.
The drug will need more testing–which in turn means more time, not to mention more money–before it can be used this way.
An update on Covid in Africa
One of the mysteries of an already pretty weird disease has been its impact on Africa. According to a World Health Organization’s estimate, 65% of people in Africa have been infected by Covid. That’s something like 100 times more cases than have been reported. Covid cases are undercounted everywhere, and more so in Africa, because so many people have no symptoms.
When they say “estimated,” they’re not talking about an educated hunch. They’re basing it on blood samples from around the continent. It’s not as accurate as counting every head, but it’s not pulling numbers out of thin air either.
Earlier in the pandemic, the fear was that Covid would devastate Africa, but it’s turned out to be one of the least affected parts of the world. Multiple explanations are on offer. It has a low percentage of people with risk factors like diabetes, high blood pressure, and heart disease. It has a relatively young population. And some studies suggest that having been infected with other diseases, including malaria, may be protective, but that hasn’t been confirmed and rushing out to buy yourself a case of malaria is not recommended.
But being one of the least affected parts of the world doesn’t mean Africa’s unaffected. It’s had 250,000 Covid deaths. Or known Covid deaths–they also tend to be underreported worldwide. Only 15% of Africa’s population has been vaccinated, and that may mean only one vaccination, since the article doesn’t say “fully vaccinated,” which is the phrase that usually pops up.