No states are reporting high flu activity, according to new data from the CDC's FluView report published Oct. 22.

The nation's seven-day average for COVID-19 hospitalizations and deaths fell this week alongside cases, which have been declining for five consecutive weeks, according to the CDC's COVID data tracker weekly review published Oct. 22.

Here are the rates of positive COVID-19 tests in each state, along with the number of new cases most recently reported and number of tests conducted per 100,000 people. 

Vermont has the highest percentage of its population fully vaccinated against COVID-19, according to the CDC's COVID-19 vaccine distribution and administration data tracker.

New daily COVID-19 hospitalization rates in the U.S. have decreased 19 percent over the last two weeks, though 12 states are still seeing hospitalization rates trend upward, according to data tracked by The New York Times.

New Mexico has administered the highest percentage of COVID-19 vaccines it has received, according to the CDC's COVID-19 vaccine distribution and administration data tracker.

Despite concerns over the number of antibodies against COVID-19 dwindling after vaccination, there's no reason to worry about so-called "waning immunity," Katherine Wu, PhD, wrote Oct. 20 for The Atlantic. 

The number of people getting vaccinated against COVID-19 in Idaho has decreased in the last month, even as surging patient volumes have forced many hospitals in the state to operate under crisis standards of care, The Idaho Statesman reported Oct. 21. 

Wyoming is the currently most vaccine hesitant state, with 28.6 percent of residents over 18 reporting being hesitant to receive the COVID-19 vaccine, according to data from the U.S. Census Bureau. 

A sublineage of the delta variant that has gained some traction in the U.K. has been detected in the U.S., the CDC said Oct. 21. 

Residents in areas with the most robust primary care, the strongest public health infrastructure, and the fewest social vulnerabilities were 12 percent less likely to get infected with COVID-19 and 42 percent less likely to die from the virus, according to a report released Oct. 18 by Primary Care Collaborative and the Robert Graham Center.

An Oct. 20 report from The Lancet Countdown found human-induced climate change is negatively impacting human health in nearly every measurable way.

New York City's health department said there have been 14 human cases of leptospirosis, including one death, this year as of Sept. 22, more than the total number of cases reported to the city than any other year. 

A study published Oct. 19 in Science Translational Medicine found male placentas showed increased immune activation compared with female placentas in pregnant women who tested positive for COVID-19.

Boston officials declared addiction and homelessness to be public health crises at an Oct. 19 press conference, The Boston Globe reported. 

While COVID-19 cases are dropping in many U.S. regions, the Mountain West has been struggling, with Montana, Idaho and Wyoming currently recording some of the nation's highest cases per capita, according to local and state data cited by The New York Times.

Over the last week, seven-day COVID-19 case averages have risen in 15 states, are flat in four and dropping in 31, according to data tracked by Baltimore-based Johns Hopkins Coronavirus Resource Center.

The New York City Board of Health declared racism a public health crisis Oct. 18 and requested the health department expand its anti-racism work through a series of resolutions. 

As of October 22, more than 733,000 people in the U.S. had died after contracting COVID-19, according to The New York Times.

The World Health Organization released an official definition on post COVID-19 condition on Oct. 6, but clinicians have been treating patients with symptoms since the onset of the pandemic — including stigma surrounding the legitimacy of the condition.