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What happened to the 14-28 day incubation period ?
According to this people infected with the Delta variant had about 1000x more copies of the virus in their respiratory system than the original Covid. It spreads sooner- 4 days. And symptoms may become evident sooner.
Well, looks like this bioweapon from Communist China will kill forever . People get older and will be more susceptible to this . It is worse than the flu. My opinion only.
The 1918 flu mutated over the years and that is our annual flu today.
Variants are identified by a number and becomes commonly known by the location, first detected, which is not necessarily the location where first created.
According to this people infected with the Delta variant had about 1000x more copies of the virus in their respiratory system than the original Covid. It spreads sooner- 4 days. And symptoms may become evident sooner.
I didn't read the article and went right to the study instead.
The spread happens before any symptoms show with the Delta variant...now down to 3.7 days incubation period.
China now requires a negative test within a 48 hour time period...basically every other day one needs to take a test.
Study from the NPR link: https://virological.org/t/viral-infe...-2-variant/724
As we know, individuals undergo a latent period after infection, during which viral titers are too low to be detected. As viral proliferation continues within host, the viral load will eventually reach detectable level and become infectious. Knowing when an infected person can spread viruses is essential for designing intervention strategies to break chains of transmission. However, this is difficult to study based on clinical investigations since over 50% of transmission occurred during the pre-symptomatic phase10. Our investigation on the quarantined subjects suggested for the Delta variant, the time window from the exposure to the detection of viruses was peaks at ~3.7 days and presented a higher infectiousness/transmission risk when the virus was first detected.
If the Covid was contagious and the new Delta version is even worse then I shudder to think what the next variant, the "echo", is going to bring. We will catch it simply be reading about it!
This covid stuff is never going to end. Is there any doubt we will be masking up and closing business's again this Fall?
I didn't read the article and went right to the study instead.
The spread happens before any symptoms show with the Delta variant...now down to 3.7 days incubation period.
China now requires a negative test within a 48 hour time period...basically every other day one needs to take a test.
Study from the NPR link: https://virological.org/t/viral-infe...-2-variant/724
As we know, individuals undergo a latent period after infection, during which viral titers are too low to be detected. As viral proliferation continues within host, the viral load will eventually reach detectable level and become infectious. Knowing when an infected person can spread viruses is essential for designing intervention strategies to break chains of transmission. However, this is difficult to study based on clinical investigations since over 50% of transmission occurred during the pre-symptomatic phase10. Our investigation on the quarantined subjects suggested for the Delta variant, the time window from the exposure to the detection of viruses was peaks at ~3.7 days and presented a higher infectiousness/transmission risk when the virus was first detected.
I didn't read the article and went right to the study instead.
The spread happens before any symptoms show with the Delta variant...now down to 3.7 days incubation period.
China now requires a negative test within a 48 hour time period...basically every other day one needs to take a test.
Study from the NPR link: https://virological.org/t/viral-infe...-2-variant/724
As we know, individuals undergo a latent period after infection, during which viral titers are too low to be detected. As viral proliferation continues within host, the viral load will eventually reach detectable level and become infectious. Knowing when an infected person can spread viruses is essential for designing intervention strategies to break chains of transmission. However, this is difficult to study based on clinical investigations since over 50% of transmission occurred during the pre-symptomatic phase10. Our investigation on the quarantined subjects suggested for the Delta variant, the time window from the exposure to the detection of viruses was peaks at ~3.7 days and presented a higher infectiousness/transmission risk when the virus was first detected.
Again, thanks for sharing.
The kicker for me is:
"...since over 50% of transmission occurred during the pre-symptomatic phase."
That does not bode well for containing/isolating the infected. Countries that force/volunteer for contact tracing have a better chance at rounding up the infected before it spreads further. However, it's a small window of opportunity.
Again, thanks for sharing.
The kicker for me is:
"...since over 50% of transmission occurred during the pre-symptomatic phase."
That does not bode well for containing/isolating the infected. Countries that force/volunteer for contact tracing have a better chance at rounding up the infected before it spreads further. However, it's a small window of opportunity.
Once per week tests will not stop the spread...not if it peaks in 3-4 days.
China went to 48 hour tests...that's every other day in hopes of catching it earlier.
The US...we do 7 day tests which will not work with Delta variant.
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