Switzerland has confirmed its first case of a new, highly contagious strain of mpox, marking the latest European country to report an infection of the virus. The case, detected in a person who had recently traveled to Uganda, follows a rise in mpox infections in Central Africa, where the strain emerged in 2023.

The strain, known as clade Ib, has been responsible for thousands of infections in Central Africa, particularly in countries like Burundi and Uganda. This variant is believed to cause more severe illness, with a higher risk of death, especially among children. Health experts are also concerned that it spreads more easily than previous strains.

Mpox, a viral disease that can cause fever, headache, swollen lymph nodes, and a characteristic rash, spreads primarily through close skin-to-skin contact. In addition to the Central African region, the new strain has been detected in several countries outside of Africa, including the United States, Canada, Brazil, China, and parts of Europe.

Switzerland’s public health agency reported that the infected individual was in isolation, and no further risk to the public has been identified. However, the agency advised anyone with symptoms to seek medical advice immediately. The European Centre for Disease Prevention and Control (ECDC) confirmed the infection as part of a broader trend of rising cases in Europe linked to travel from regions experiencing active outbreaks.

The United Kingdom has also seen a number of clade Ib cases, with the most recent infection reported in April. Notably, this case was not linked to recent travel, suggesting possible local transmission. The UK Health Security Agency confirmed that no further cases were found among close contacts, and the public risk remains low. The UK has prepared for the possibility of more cases by acquiring over 150,000 doses of the mpox vaccine.

Germany has reported eight cases of the new strain, with the most recent occurring in February. Belgium and France have seen smaller numbers of cases, with infections linked to travel from Central Africa. Sweden, the first European country to report a case in 2024, remains the only nation with a confirmed infection tied to the new strain.

The World Health Organization declared a global public health emergency in August 2024, urging European health authorities to prepare for potential cases. While the risk to the general public remains low, health officials continue to monitor the situation closely, urging travelers to avoid areas with ongoing outbreaks and to seek medical advice if they develop symptoms.

As the outbreak spreads, the situation highlights the challenges of containing contagious diseases across borders, especially as global travel continues to increase.

A major international study has uncovered significant differences in how loneliness affects older adults and those in midlife, depending on where they live. The findings challenge long-held assumptions that loneliness primarily affects the very old and very young, suggesting instead that geography, social systems, and life circumstances play key roles.

Researchers analyzed data from more than 64,000 people aged 50 to 90 across 29 countries, mostly in Europe, using a standardized loneliness scale that asked how often participants felt isolated, lacked companionship, or were left out.

The study, published in Aging & Mental Health, found that people generally become lonelier as they age. However, the extent of that loneliness varied significantly by country. In Bulgaria and Latvia, for example, older adults reported some of the steepest increases in loneliness with age, while countries like Denmark, Switzerland, and Austria reported the lowest loneliness levels overall.

Conversely, in the United States, the most pronounced loneliness was found not among the elderly but among people in midlife—making it the only country in the study where that was the case. A similar trend appeared in the Netherlands, though researchers noted data limitations there.

The study identified key factors linked to loneliness across all age groups, including unemployment, poor health, depression, and being unmarried. However, the impact of these factors varied between countries. In the U.S., for instance, being out of work in midlife was especially tied to feelings of isolation.

“Loneliness is not just a late-life issue,” said Esteban Calvo, senior author of the study and dean at Universidad Mayor in Chile. “Our findings suggest it’s influenced by a range of societal and personal factors, not just age.”

Experts say the study underscores the need for tailored, culturally sensitive approaches to addressing loneliness. “A one-size-fits-all approach will not solve this worldwide problem,” Calvo added.

The study did have limitations. Data were collected before the COVID-19 pandemic, and low response rates in some countries may affect how representative the results are. It also did not fully distinguish between different life circumstances—such as whether someone was widowed or had never married—making some findings harder to interpret.

Still, researchers say the implications are important. “Loneliness is a bit like hunger,” said Caterina Mauri, a senior researcher at the Free University of Brussels, who was not involved in the study. “It’s a signal to seek more connections, and when ignored, it can lead to serious mental and physical health consequences.”

With loneliness increasingly recognized as a global health concern, experts say more attention must be paid—not just to the elderly, but to people of all ages facing social disconnection.