A new study finds that the antiviral drug Paxlovid can safely be used by children aged 6 and older.

The study, published recently in Pediatrics, found Paxlovid, which combines the drugs nirmatrelvir and ritonavir, is safe for children who weigh at least 44 pounds who have mild to moderate COVID-19 but are at risk of developing severe disease.

Paxlovid is approved by the US Food and Drug Administration in children at least 12 years old who weigh at least 88 pounds.

No serious adverse events

The study included 75 children 6 to 17 years old who received at least one dose of Paxlovid. One group received a lower dose and the other a higher dose. 

Researchers found that both doses were safe and well-tolerated, with no serious adverse events. In 90% of participants in both groups, blood concentrations of the drug reached levels that have been shown to have antiviral effects in adults.

The most frequently reported medical problems among the study participants were diarrhea and headaches, although these were uncommon, occurring in only 4% of each group. None of the participants stopped taking Paxlovid because of side effects. 

None of the children were hospitalized or died from COVID-19 during the study, which was funded by Pfizer, which makes Paxlovid. 

The study authors say the results provide important data for clinicians treating pediatric patients with mild-to-moderate COVID-19.

“Given the continued burden of disease in pediatric patients, even in a postpandemic era, a convenient outpatient oral treatment option for preventing severe disease in individuals with mild-to-moderate COVID-19 continues to be an unmet medical need,” they wrote. 

An Escherichia coli–produced human papillomavirus (HPV) vaccine protects women from cancer-causing strains of HPV, according to a recent study in The Lancet Infectious Diseases. E coli–produced HPV vaccines cost less than commonly used HPV vaccines and could help boost immunization rates in low- to middle-income countries. 

“Given its low production cost, this vaccine has the potential to improve global access to high valency HPV vaccination,” wrote the authors, led by researchers at Jiangsu Provincial Academy of Preventative Medicine in China. 

Effective at protecting against high-risk HPV strains

HPV causes 90% of cervical cancer, which is the fifth most common cancer in women. In 2024, 604,000 women worldwide received a cervical cancer diagnosis, and 280,000 women died from it. Many of the deaths occurred in poorer countries, according to The World Health Organization (WHO). 

The WHO hopes to eliminate cervical cancer by vaccinating 90% of girls worldwide by 2030. Yet the cost of vaccines are a barrier to many countries’ ability to implement widespread HPV immunization. 

The efficacy results of Cecolin 9 against the 12-month persistent infection is an important milestone.

To understand if the E coli–produced nine-valent (nine-strain, 9vHPV) HPV vaccine protected against HPV infection, the researchers created a multicenter double-blind randomized clinical trial of 9,327 women in China who had not been vaccinated for HPV. Half, 4,664, received the 9vHPV vaccine (Cecolin 9) and the remaining 4,663 women received the two-valent HPV vaccine (Cecolin) as the control group. 

The researchers found that Cecolin 9 was 98.2% effective at preventing infection for a year from several high-risk HPV strains: 31, 33, 45, 52, and 58. 

“The efficacy results of Cecolin 9 against the 12-month persistent infection is an important milestone,” Punnee Pitisuttihum, PhD, of Mahidol University in Thailand, and Rakesh Aggarwal, MD, DM, of Mahatma Gandhi University of Medical Science and Technology in India, wrote in an accompanying commentary. 

“However, the remaining challenge is licensing this product outside of China and applying for WHO prequalification to ensure that Cecolin 9 meets global safety standards.” 

The Centers for Disease Control and Prevention (CDC) published a food safety alert for an ongoing outbreak of E. coli infections linked to frozen organic blueberries.

At least 12 people in two states have been sickened during the outbreak. Four people have been hospitalized, but no deaths have been reported. Eleven of the case-patients are from Florida, with a single case reported in Georgia. Illnesses started on dates ranging from May 11, 2026, to June 5, 2026, the CDC said. Case-patients range in age from 2 to 88 years old. 

“The true number of sick people in this outbreak was likely much higher than the number reported, and this outbreak may not have been limited to the states with known illnesses,” the CDC said. 

One lot of blueberries recalled

Late last week Frutas y Hortalizas del Sur of San Carlos, Chile, recalled Frozen GreenWise brand organic blueberries after being sold in Publix stores in eight states: Alabama, Florida, Georgia, Kentucky, North Carolina, South Carolina, Tennessee, and Virginia.

The frozen blueberries recalled cover a single lot with a best-by date of February 9, 2028. Consumers should check their freezers for the fruit and toss the product if they find it. 

“Do not eat any recalled frozen blueberries,” the CDC said in a news release yesterday. “Throw them away or return them to where you bought them. Wash items and surfaces that may have touched the recalled blueberries using hot soapy water or a dishwasher.”

• The number of cases in a growing cyclosporiasis outbreak in southeastern Michigan has risen to 700, according to the Detroit Free Press, with 36 people hospitalized. The gastrointestinal illness, caused by the intestinal parasite Cyclospora cayatensis, typically affects people who’ve eaten contaminated produce, including lettuce, basil, cilantro, snow peas, and raspberries. The Michigan Department of Agriculture & Rural Development (MDARD) has been conducting interviews with case-patients, but, as of July 4, investigators have not been able to link a specific produce type or grower to the outbreak. “This is food-borne illness forensics, and MDARD [is] working as quickly as possible to review the nearly 600 food histories to try and identify a common denominator in collaboration with our public health partners,” a spokesperson told the paper.
• The New York City Health Department has launched an investigation into two cases of Legionnaire’s disease in two neighborhoods on the Upper East Side of Manhattan. Because past community clusters of the pneumonia-like illness in New York City have been linked to Legionella bacteria being spread by mists from cooling towers, the department is sampling and testing water from all cooling tower systems in the two neighborhoods. “Any New Yorkers with flu-like symptoms who live, work, or visited the affected area since late June should contact a health care provider as soon as possible,” NYC Health Commissioner Alister Martin, MD, MPP, said in a press release.
• The number of new PhD students admitted to the country’s leading research universities for fall 2026 dropped 15% compared with last year, according to a new report from the Association of American Universities (AAU). The authors of the report, which is based on data from 55 AAU member institutions, say cuts in graduate admissions can be directly linked to declining and unpredictable federal research funding. “As PhD admissions decline, America faces the alarming prospect of losing an entire generation of scientific talent,” the authors write.