Jonna Lorenz

Investigators at Cedars-Sinai Medical Center identified a variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), called CAL.20C, which accounted for about 44% of samples in Southern California in January.

Children are about half as susceptible as adults to contracting COVID-19, according to new research from Israel.

HIV testing and initiation of antiretroviral therapy (ART) fell in South Africa during the national lockdown in response to the coronavirus disease 2019 (COVID-19) pandemic, a new study shows.

Clostridioides difficile thrives in an environment of inflammation which found that inflammation provides nutrients for C. diff and creates an inhospitable environment for competing bacteria.

Health care workers hospitalized with COVID-19 showed no greater risk than the general public for mechanical ventilation or death, and may actually have less risk of ICU admission and shorter hospital stays, a new study found.

US counties that scored higher on the Social Vulnerability Index, which includes such factors as poverty, unemployment and education, saw higher incidence rates of COVID-19 cases and deaths, a University of Michigan study found.

Adherence to nonpharmaceutical interventions such as staying home and avoiding eating in restaurants dropped during the pandemic, while use of face masks increased, according to a new report.

Moderately ill patients hospitalized with COVID-19 were less likely to require life support after receiving full-dose anticoagulation treatment, according to interim results of a multiplatform randomized trial.

Saliva testing for coronavirus disease 2019 (COVID-19) is as effective as the standard nasopharyngeal tests, according to a new study by investigators at McGill University.

Among people living with HIV, lower white blood cell counts were associated with smaller brain volume in the hippocampus and thalamus, a new study found, suggesting the possibility of generalizable neurologic signatures of HIV infections.

An assessment of literature on imaging findings of children with coronavirus disease 2019 (COVID-19) found more systematic reviews than primary studies, raising concerns about wasteful repetition, according to a research letter in JAMA Network Open.

The bowel resting strategy might reduce switching from metronidazole to vancomycin among patients with Clostridioides difficile infection, but it might not reduce mortality or recurrence, a new study found.

A new study of COVID-19 interventions in the 2 countries shows how lockdowns and public recommendations are associated with reductions in the mobility of visitors to public spaces.

Increased age, male sex and underlying health conditions including diabetes and kidney disease were associated with a higher risk of all-cause mortality among nursing home patients with COVID-19, a new study found.

A new article shows that breastfeeding after receiving dolutegravir in late pregnancy contributed relatively little infant plasma exposure but additional prophylaxis was reported among some.

Between March 1 and July 31, there were 76088 deaths among Americans aged 25 to 44, amounting to 11899 (18.5%) more than expected during that timeframe, new research shows.

A new study from Italy provides evidence that new mothers with COVID-19 can safely breastfeed and stay together in the same room with their newborns after delivery if they follow safety precautions.

Investigators in Tennessee detailed associations between seasonal increases in sporadic pediatric cases of norovirus gastroenteritis and reported norovirus outbreaks among older populations.

Modulating gut microbiota could have therapeutic benefits for people living with HIV, according to a recent study that found HIV infection in women was associated with altered gut microbiota and distinct plasma metabolite profile.

Universal newborn screening for congenital cytomegalovirus infection in China could reduce childhood hearing loss cases by 2316 each year, a new study found.

Public understanding of adverse events could be an obstacle in the rollout of vaccines to fight the coronavirus disease 2019 (COVID-19).

Clostridium difficile infection (CDI) was associated with poorer outcomes, including a higher risk of mortality, among patients with chronic pancreatitis, an evaluation of the Nationwide Inpatient Sample database found.

An early trial of fluvoxamine to treat mild coronavirus disease 2019 (COVID-19) showed promising results, suggesting the antidepressant may help ward off clinical deterioration in patients with mild symptoms.

Children who were exposed to antibiotics before age 2 had a greater risk of childhood health conditions like asthma, celiac disease, obesity and ADHD, a new study in Mayo Clinic Proceedings found.

A survey of clinicians found that despite planning for resource limitations during the coronavirus 2019 (COVID-19) pandemic, clinicians still faced difficult decisions at bedside.

Further evidence demonstrating the lack of efficacy of hydroxychloroquine as a treatment for coronavirus disease 2019 (COVID-19) was detailed in a new randomized, multicenter, blinded, placebo-controlled study published in JAMA.

The anti-inflammatory drug infliximab may have a role in treating COVID-19, according to a new study examining how a key enzyme influences viral entry and gut inflammation.

Neurological symptoms of COVID-19 ranging from dizziness to microclots could be the result of destabilization of the blood-brain barrier caused by virus spike proteins circulating in the blood.

A third of patients hospitalized with community-onset Clostridioides difficile infections had recently been discharged from the same hospital, and most of those received antibiotics, according to research presented at IDWeek.