As the farming season progresses so does concern for the increased prevalence of the COVID Delta variant in the region. We asked Don Schaffner, Extension Specialist, about the Delta variant and if we should be concerned about it. If you or your farm workers are in need of a vaccine please email njfarmvax@njaes.rutgers.edu and an Extension team member will assist you with finding local vaccination locations and/or determine if an on-farm vaccine clinic is possible for your workers. If you have questions about the vaccine visit the Rutgers On-Farm Food Safety Vaccine Education for Growers website for information in multiple languages.
Meredith Melendez: Are we seeing an increase in cases of the COVID Delta variant in New Jersey or the region?
Don Schaffner: Yes. According to CDC, Region 2 (New Jersey, New York, Puerto Rico, and the Virgin Islands) had only 3.1% of all infections due to the Delta variant for the week ending 5/22/21. This percentage had jumped to 17.7% week for the week ending 6/5/21. There are not further updates at this time.
Also according to the CDC in NJ 3.4% all infections were due to the Delta variant for the week ending 5/22/21. No further New Jersey specific updates are available at this time.
MM: How is the Delta variant different than the COVID cases we saw over the past year?
DS: There are a number of reasons why there is increased concern over the Delta variant. Epidemiological data shows that the variant has increased transmissibility (i.e. it is more easily spread from person to person) than the original strain. Estimates indicate that it is about 60% more transmissible. This means that for every one person infected by the original virus, on average for the same conditions the Delta variant would spread to about 1.6 people.
One of the ways of combating the virus once someone is infected is with monoclonal antibody treatments. There is evidence that the Delta variant is more resistant to this important treatment.
There is also evidence that the Delta virus is not as readily neutralized by post-vaccination sera. Sera contain the antibodies in people that are vaccinated.
MM: Are the Pfizer, Moderna, and J&J vaccines as effective against the Delta variant?
DS: Yes. The Johnson & Johnson vaccine appears to be about 60% effective against the delta variant. The Pfizer and Moderna vaccines are about 88% effective after the second dose (vs. over 90% for other variants). So while the vaccines are less effective against the Delta variant, it is still much better to be vaccinated than not.
MM: Why should someone get vaccinated now if they haven’t already?
DS: Unvaccinated individuals are vulnerable to all variants of the virus. These variants arise through the natural evolution when the virus replicates inside a sick person. Since the vaccines can stop some people from getting infected, the more people that are vaccinated the better control we will have over these variants and stop new variants from evolving.
