Explore

Norovirus Remains Leading Cause of Cruise Ship Outbreaks, Respiratory Pathogens Gaining Ground

Norovirus Remains Leading Cause of Cruise Ship Outbreaks, Respiratory Pathogens Gaining Ground

A meta-analysis published in eClinicalMedicine reveals that norovirus has been the primary cause of infectious-disease outbreaks on cruise ships over the past 57 years. However, respiratory pathogens like influenza and SARS-CoV-2 are increasingly contributing to these outbreaks. The study, led by Peking University researchers, analyzed 107 observational studies covering 619 outbreaks on 236 ships from 1969 to 2026. While the overall risk of outbreaks and related deaths on cruise ships remains relatively low, the unique semi-closed, high-density environment facilitates rapid transmission of infectious agents. Norovirus accounted for the largest percentage of outbreaks since 1995, but SARS-CoV-2 showed a higher infection rate among crew members compared to passengers. The findings indicate a diversification of the epidemiological landscape on cruise ships, with emerging pathogens and distinct infection patterns between passengers and crew.

Wastewater Surveillance Proposed as Key Tool for Detecting Deadly Fungal Infections Amid Growing Global Threat

Wastewater Surveillance Proposed as Key Tool for Detecting Deadly Fungal Infections Amid Growing Global Threat

Researchers are advocating for the use of wastewater surveillance as a crucial method for detecting deadly fungal infections, a threat that is escalating due to a warming climate, an increase in immunocompromised individuals, and a limited number of effective antifungal drugs. Fungi like Candida auris, first identified in Japan in 2009, have spread globally, exhibiting resistance to multiple drugs and causing difficult-to-control hospital outbreaks. Despite fungal infections causing approximately 2.5 million deaths worldwide annually—surpassing tuberculosis and malaria combined—they receive little attention, often viewed as complications of existing illnesses rather than public health threats. Current hospital-based monitoring systems frequently miss the true spread of these pathogens due to biological factors, such as many people carrying fungi asymptomatically, and technical limitations in testing. Wastewater monitoring offers a community-wide snapshot, with studies in southern Nevada and Florida demonst...

U.S. Flu Season Starts Early with Mutated H1N1 Strain, CDC Reports

U.S. Flu Season Starts Early with Mutated H1N1 Strain, CDC Reports

The 2026-2027 flu season in the United States has begun earlier than usual, with cases rising significantly since August, according to the U.S. Centers for Disease Control and Prevention (CDC). As of November 5, flu infections are increasing in 42 states, particularly in the West. The CDC's FluView surveillance report for the week ending October 31 indicated that early-season influenza activity is higher than typically observed. Currently, the H1N1 strain, a type of influenza A virus, is responsible for the majority of cases. This H1N1 strain has acquired a new mutation, G155E, which experts believe may affect its ability to evade pre-existing immunity. This is a shift from the previous winter, when influenza A H3N2 subclade K was the dominant strain. Experts like Andrew Pekosz, Ph.D., a virologist at Johns Hopkins Bloomberg School of Public Health, note that cases are still relatively low but are in the early phases of a surge. The percentage of positive flu tests was 9.1% during the week ending October 3...

Study Identifies Factors Associated with Severe COVID-19 in Children Under 12

Study Identifies Factors Associated with Severe COVID-19 in Children Under 12

A recent case-control study conducted in Fuzhou, China, from January 2020 to August 2025, has identified several factors associated with severe COVID-19 outcomes in children under 12 years old. The study, which included 347 severe cases and 694 non-severe controls, found that male sex, age five years or younger, and home-based/preschool care were positively associated with severe disease. Additionally, children residing in rural areas, those with delayed medical consultation (more than two days after symptom onset), and those with pre-existing conditions such as obesity, chronic respiratory disease, or metabolic/endocrine disorders faced higher odds of severe COVID-19. Conversely, vaccination and caregiver disease-prevention awareness were inversely associated with severe outcomes. The study also noted that concurrent clinical indicators like fever lasting over three days, dyspnea/shortness of breath, and altered mental status were more frequent in severe cases, serving as warning signs for clinical deteri...

U.S. Measles Cases Exceed 5,000, Raising Concerns Ahead of Holidays

U.S. Measles Cases Exceed 5,000, Raising Concerns Ahead of Holidays

More than 5,000 measles cases have been reported across the United States this year, marking a significant surge in the infectious disease. This increase has prompted growing concerns, particularly as the holiday season approaches, a period often associated with increased travel and social gatherings. The current figures indicate a dangerous high for measles cases in the U.S., as reported by NBC News’ Aaron Gilchrist on November 8, 2026. The rapid spread of the disease highlights ongoing public health challenges and the importance of vaccination efforts to control outbreaks. The situation suggests a potential for further escalation if preventative measures are not effectively reinforced.

Measles Cases Surge in the Americas, U.S. Reports Significant Increase

Measles Cases Surge in the Americas, U.S. Reports Significant Increase

Between epidemiological weeks 1 and 43 of 2026, the Region of the Americas recorded 57,666 confirmed cases of measles across 17 countries and territories. This represents a 4.7-fold increase compared to the total cases reported in 2025. Guatemala, Mexico, the United States, Peru, and Canada collectively account for 99.5% of these cases. During this period, 81 deaths were attributed to measles. In weeks 41 and 42 of 2026, there were 547 new confirmed cases reported in six countries, indicating a 38% decrease compared to the preceding period. The United States alone reported 332 of these new cases, highlighting its significant contribution to the regional total. The overall surge in measles cases across the Americas points to a concerning trend in public health.

Dallas County Investigates Potential E. coli Outbreak Linked to State Fair of Texas Petting Zoo

Dallas County Investigates Potential E. coli Outbreak Linked to State Fair of Texas Petting Zoo

Dallas County health officials are investigating nine suspected cases of E. coli infection in children and families who visited the State Fair of Texas. The common link among these cases appears to be exposure to the livestock and petting zoo areas at Fair Park. Doctors initially noted a pattern of sick children whose parents mentioned recent visits to the fair. This investigation follows a broader concern regarding animal-contact illnesses, with a new CDC study estimating approximately one million illnesses annually in the U.S. linked to animal contact, resulting in nearly 9,600 hospitalizations and 236 deaths. The study highlights that Shiga toxin-producing E. coli (STEC), which can cause severe kidney failure (hemolytic uremic syndrome), accounts for an estimated 134,738 animal-contact illnesses, 960 hospitalizations, and 19 deaths per year. This incident in Texas is one of three recent E. coli investigations across different states, including Illinois and California, all linked to animal exhibits.

Dr. Kevin Winthrop Highlights Environmental Impact on Infectious Diseases and Rheumatology at Global Summit

Dr. Kevin Winthrop Highlights Environmental Impact on Infectious Diseases and Rheumatology at Global Summit

Dr. Kevin Winthrop, Professor of Infectious Diseases, Ophthalmology, and Public Health at Oregon Health & Science University, delivered a keynote address at the Global Rheumatology Summit, part of ACR Convergence 2026. He discussed the evolving landscape of rheumatology in the context of environmental change, specifically focusing on how a warming climate influences infectious disease exposure. Dr. Winthrop highlighted mosquito-borne infections like chikungunya, Zika, and dengue, noting that changing mosquito habitats could lead to increased exposure in previously unaffected regions. He emphasized that chikungunya is particularly concerning for rheumatologists due to its potential to cause persistent inflammatory arthritis, with up to 48% of acute cases leading to arthritis up to six months post-infection, and 5% to 10% developing chronic arthritis, some evolving into rheumatoid arthritis (RA). The discussion also covered the expanding geographic distribution of disease-carrying ticks, contributing to the ...

Spain Monitors Rising Chikungunya Cases, Primarily Imported from Bolivia

Spain Monitors Rising Chikungunya Cases, Primarily Imported from Bolivia

Spain is actively monitoring the risk of transmission for mosquito-borne diseases like dengue and chikungunya, particularly after observing autochthonous cases in other European countries. According to a report from the Center for Coordination of Health Alerts and Emergencies (CCAES), Spain recorded 487 imported cases of Aedes mosquito-transmitted diseases in the first ten months of 2026. This total includes 301 cases of dengue, 175 of chikungunya, and 11 of zika. The presence of the Aedes albopictus mosquito in Spain is identified as a significant public health risk due to its potential to facilitate local transmission, especially during periods of increased international travel and peak mosquito activity between April and November. The report highlights a notable increase in imported chikungunya cases from Bolivia, with 87 out of 166 cases with known exposure countries originating from there, compared to only 7 in 2025. Cuba is the second most frequent country of exposure for chikungunya, accounting for ...

FDA Closes Investigation into Romaine Lettuce Salmonella Outbreak, Leaving Key Questions Unanswered

FDA Closes Investigation into Romaine Lettuce Salmonella Outbreak, Leaving Key Questions Unanswered

The Food and Drug Administration (FDA) has concluded its investigation into a Salmonella outbreak linked to romaine lettuce that sickened 43 people in the U.S. The agency closed the investigation with a brief 102-word notice, without disclosing the brand or grower of the implicated lettuce, nor the ages or locations of the affected patients. According to Food Safety News, by the time the FDA confirmed romaine lettuce as the source of the outbreak, the contaminated products were past their shelf life and no longer available for sale. No samples tested positive for the outbreak strain, despite the FDA's investigation including supply chain tracing, site visits, and sample testing.

Hillsborough County Extends State of Emergency Amidst Decreasing Dengue Cases

Hillsborough County Extends State of Emergency Amidst Decreasing Dengue Cases

Hillsborough County, Florida, has extended its local state of emergency through November 12, despite reporting the lowest weekly increase in dengue cases since the emergency order was first issued on September 24. The county recorded 22 new cases during the week of October 25-31, bringing its total to 407 confirmed cases since July. This marks the first time in several weeks that the weekly increase has fallen below 25 cases. Pinellas County also reported 13 additional cases, totaling 80. Across Florida, 524 dengue cases have been recorded since July, with Hillsborough and Pinellas counties accounting for the majority of the 39 new infections in the latest state update. Health experts suggest these numbers are likely undercounts due to the delayed onset of symptoms and the fact that many infected individuals do not experience illness. Mosquito management crews in Hillsborough County are continuing aerial and ground treatments, focusing on areas with detected dengue virus activity in the mosquito population...

FDA Mandates Label Changes for GLP-1 Receptor Agonists Due to Potential Eye Condition Risk

FDA Mandates Label Changes for GLP-1 Receptor Agonists Due to Potential Eye Condition Risk

The U.S. Food and Drug Administration (FDA) is requiring manufacturers of Glucagon-Like Peptide-1 Receptor Agonist (GLP-1 RA) medications to update their product labeling. This mandate stems from a potential increased risk of non-arteritic anterior ischemic optic neuropathy (NAION), a rare but serious eye condition that can lead to acute, painless vision decrease in one eye, including permanent vision loss. The FDA's decision follows a comprehensive evaluation of clinical trial data, animal data, and postmarketing reports, including observational studies and case reports. While initial reports were challenging to interpret due to overlapping risk factors for NAION and conditions treated by GLP-1 RAs, further analysis indicated a potential association. The agency's meta-analysis of 126 clinical trials showed a NAION incidence rate of 6.4 events per 100,000 patient-years in GLP-1 RA users compared to 3.8 events per 100,000 patient-years in comparator groups. Additionally, a retrospective cohort study by the ...