Though the extremely transmissible Omicron variant of COVID-19 is ripping via america at document charges, some households have been affected erratically, with some folks testing constructive for COVID-19 whereas others in the identical family don’t.
Coronavirus vaccines and boosters are very efficient at stopping extreme sickness, hospitalization and dying from COVID-19, however breakthrough infections can happen, often with milder signs. In response to the Centers for Disease Control and Prevention, “Anybody with Omicron an infection can unfold the virus to others, even when they’re vaccinated or don’t have signs.” So at this level, if a family has a COVID-positive individual, ought to the remainder of the family ought to count on to get it no matter vaccination standing?
Not essentially, says Dr. Lucy McBride –– a doctor in Washington, D.C., who can be a Yahoo Information Medical contributor. She explains that folks and the virus relate to 1 one other in numerous methods relying on numerous components.
(Some responses have been edited for readability.)
Yahoo Information: Why do some people who find themselves in the identical family get COVID-19, and others don’t? Can or not it’s in comparison with the flu?
Dr. Lucy McBride: It may be helpful at this second of the pandemic to begin to consider evaluating the flu and coronavirus. Not that they’re equal in any respect, however you might need a case of flu within the household, within the family, and a few folks would possibly get contaminated and others may not. Equally, you will have a COVID case in your loved ones and a few folks within the household would possibly get COVID and a few may not. And whether or not or not a single individual will get contaminated and/or sick after an publicity within the family hinges immediately on the quantity of virus that’s put out by the COVID-positive individual, and the situations in that area, and the immune system, and vaccination standing of the one that is being uncovered.
You’ll be able to have inhaled a small viral load from the contaminated individual, you’ll be able to have inhaled a big viral load. In different phrases, you will have inhaled a special quantity of virus. You even have a singular response to the virus primarily based in your underlying well being situations, your immune system and the opposite components at play. For instance, if within the house you’re uncovered in a big room the place the home windows have been open, that is going to be maybe a special degree of publicity than somebody who’s sleeping in the identical room because the COVID-positive individual. It’s possible you’ll, for instance, have had three pictures and you are a younger, wholesome individual, and you could not get as sick in consequence. We all know that vaccinated folks get sometimes much less sick than people who find themselves unvaccinated or have underlying well being situations.
So do not forget that it is not automated that somebody will get contaminated within the family. But, family transmission is the most typical drawback. And the explanation we see widespread transmission of a very contagious variant, as a result of throughout the similar home, folks usually aren’t masked and so they’re in shut quarters.
When is an individual most contagious with the Omicron variant?
We’re seeing with Omicron — this extremely transmissible, although much less intrinsically extreme, variant of coronavirus — that individuals are ready transmit the virus to different folks from as quickly as a day after they’re contaminated to as much as 10 days after they’re contaminated. However the extra frequent window is between 24 hours previous to growing signs and 5 days after growing signs. However, after all, these ranges are variable relying on the individual.
What’s the testing timeline in case you’ve had a COVID-19 publicity?
I am recommending to my sufferers [that] they observe the CDC tips and isolate for 5 days and masks for Day 6 to 10 and train warning throughout that point. I am additionally recommending to my sufferers that if they will afford it and so they can entry it, to take a speedy antigen take a look at at Day 5 so as to depart isolation, if that speedy antigen take a look at is adverse on Day 5, you are fairly certain you are not contagious to different folks. If it is constructive, you’ll take a look at once more on Day 6. And in case you’re adverse on Day 6, then you’ll be able to depart isolation. A adverse antigen take a look at tells you with fairly good confidence that you just’re now not carrying contagious ranges of virus in your nostril.