Author's posts
How Many People Do We Need To Vaccinate Against SARS-CoV-2? Just About Everybody
The rise of the Delta variant means the race to vaccinate the entire global population has taken on a new urgency.
What Is Planetary Health?
A reflection for Earth Day
How Long Does Immunity To SARS-CoV-2 Last?
In most cases, at least seven months. Sometimes possibly much longer.
Now We Know: Covid-19 Vaccines Prevent Asymptomatic Infection, Too
New results from a CDC study are tremendously important to developing strategies for reducing SARS-CoV-2 transmission.
Variant Strains, Reinfection, And The Diminishing Possibility Of Achieving Full Herd Immunity In The US
Many people are asking if we will be able to eradicate SARS-CoV-2 through herd immunity. The answer is complicated.
Covid-19 And The Science Of Reinfection
Like other viral infections, SARS-CoV-2 stimulates the human immune system and typically confers what we casually call “acquired immunity” — the amazing ability to fight off future attacks of the same or closely related pathogen.
Is Ebola Endemic In Humans?
The answer is “probably”.
To Prevent Future Pandemics The US Should Invest In “Real-Time Research”
Epidemiology should consider national intelligence as a model for real-time information gathering and evaluation.
What Are Mathematical Models Of Covid-19?
Another interpretation.
Is Ebolavirus Spillover Becoming More Common?
It depends on how you look at it.
