Expert: Don’t Think Old Antibodies Will Protect Against Delta
The good news is that vaccines offer some protection from the Delta variant.
Despite being roughly eighteen months into a global health pandemic, the situation out there still looks troubling.
In the United States, the highly transmissible Delta variant, first detected by scientists in India last fall, has quickly become the dominant strain—representing more than 95 percent of all sequenced cases, the U.S. Centers for Disease Control and Prevention says.
The current seven-day average of daily new coronavirus cases now stands at roughly one hundred fifty-three thousand, which is more than ten times higher compared to just two months ago and more than 120 percent higher compared to last year, according to the latest data from Johns Hopkins University. In total, more than forty million coronavirus cases have been tallied since the pandemic began.
That number continues to grow on a daily basis, and some might be led to believe that previous infections and the remaining antibodies will keep them safe from the Delta variant. According to one medical expert, that is not true.
“Research is now showing us that if you had a previous infection from the original variant, you had some immunity to . . . the original COVID (virus),” Dr. Robert McNab, medical director of Freeman Health System’s COVID-19 unit, said during a recent weekly medical briefing.
“But really, when looking at the variants, there’s very minimal amount of antibody production, especially as far as Delta is concerned,” he added.
Vaccines to the Rescue
However, the expert noted that currently available vaccines can pose a great barrier to coronavirus variants like the Delta variant.
“We can say that the original vaccinations are not only still very effective against the original COVID (virus) but also really mounts a great response against the Delta variant,” McNab said.
Throughout the ongoing pandemic, health experts have asserted that vaccination is the best way to protect against the virus, and many have attributed the recent spike in cases to the large numbers of Americans who remain unvaccinated.
According to the latest data compiled by the CDC, more than 53 percent of the U.S. population is fully vaccinated, while about 63 percent have had at least one shot.
Focus on Delta
In recent weeks, the emergence of the Mu variant has concerned medical experts, but many still believe the focus should still be on containing the Delta variant.
“The Delta variant for me is the one that’s most concerning because of the increased transmissibility,” Maria Van Kerkhove, the World Health Organization’s technical lead for battling the coronavirus, stated during a virtual press event this week.
In addition, Dr. Mike Ryan, head of the WHO’s Health Emergencies Program, contended that Delta possesses the unique makeup to “outcompete” other variants.
Ethen Kim Lieser is a Washington state-based Science and Tech Editor who has held posts at Google, The Korea Herald, Lincoln Journal Star, AsianWeek, and Arirang TV. Follow or contact him on LinkedIn.