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Chikungunya Spreads in Europe: Warmer Temps & Mosquitoes Fuel Rise in Cases

by Dr. Priya Deshmukh - Senior Editor, Health
written by Dr. Priya Deshmukh - Senior Editor, Health

Southern Europe is facing a prolonged season of risk for mosquito-borne diseases like chikungunya, dengue, and West Nile virus, with the potential transmission period now lasting up to six months in some areas. A recent study published in the Journal of Royal Society Interface suggests that the temperature threshold for infection is lower than previously understood, increasing the areas at risk and extending the period of potential transmission.

The changing climate is creating ideal conditions for the Aedes albopictus mosquito, commonly known as the tiger mosquito, to thrive and spread these diseases. This adaptable vector can now incubate and transmit pathogens at temperatures as low as 13°C (55°F), a significant decrease from previous estimates. This expanded range poses a growing public health concern, particularly in countries like Spain, Italy, Portugal, and Greece.

Chikungunya: A Growing Threat

Chikungunya virus, characterized by intense and prolonged joint pain that can be debilitating, is increasingly prevalent across Europe. The study indicates that in Belgium, France, Germany, Switzerland, and twelve other European nations, the risk of chikungunya transmission now spans three to five months annually. The increase in cases is linked to rising temperatures and the adaptability of the Aedes albopictus mosquito. In Spain, reported cases of chikungunya surged in 2025, reaching 216 – more than four times the 53 cases recorded the previous year. Similar increases have been observed in France and Italy, with Italy reporting hundreds of cases and recurring outbreaks during the summer months.

Whereas the rise in cases is notable, experts like María Velasco, a spokesperson for the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), suggest that many cases are imported by travelers returning from endemic regions. However, she emphasizes that the increasing temperatures heighten the risk of locally acquired infections. “2.5°C doesn’t seem like much, but in this context of climate change, it increases the risk of autochthonous cases,” Velasco stated.

Beyond Chikungunya: A Broader Concern

The concern extends beyond chikungunya. The Working Group on Infectious Diseases of the Spanish Society of Internal Medicine (SEMI) recently issued a call for increased diagnostic vigilance regarding infections from West Nile virus, Crimean-Congo hemorrhagic fever virus, and dengue fever within Spain. These viruses are circulating with increasing intensity, according to Velasco, highlighting the need for improved training for healthcare professionals to accurately diagnose these often-misdiagnosed illnesses. Currently, vaccines are available only for dengue and chikungunya, leaving populations vulnerable to the other viruses.

The shift from imported cases to locally acquired infections is a growing trend. José Muñoz, a researcher at the Barcelona Institute for Global Health (ISGlobal), notes that while cases were primarily imported seven years ago, they are now becoming established, with autochthonous cases reported in regions like Extremadura and Andalusia in Spain. He cautions that the spread to northern European countries is “a matter of time,” though he stresses the need to monitor whether the presence of the Aedes albopictus mosquito in colder regions is stable or sporadic.

Prevention and Preparedness

Experts emphasize the importance of preventative measures, including mosquito control efforts like fumigation and public awareness campaigns promoting the use of repellents. Eliminating standing water sources, where mosquitoes breed, is also crucial. For travelers, awareness of endemic viruses and vaccination when available are essential.

The potential for mosquito-borne diseases to become endemic in Europe is a complex issue, influenced by factors like climate change and the introduction of infected travelers. While not an immediate crisis, experts agree that preparedness is key. Continued monitoring, research, and public health initiatives are vital to mitigate the growing risk and protect populations across the continent.

This evolving situation underscores the interconnectedness of climate, public health, and global travel. Staying informed and taking proactive steps are crucial as the risk of mosquito-borne diseases continues to expand across Europe.

Disclaimer: This information is intended for general knowledge and informational purposes only, and does not constitute medical advice. It is essential to consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.

What are your thoughts on the increasing risk of mosquito-borne diseases in Europe? Share your comments below.

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Health

7 Oral Health Habits a Dentist Says to Quit Now | Dental Care Tips

by Dr. Priya Deshmukh - Senior Editor, Health
written by Dr. Priya Deshmukh - Senior Editor, Health

Maintaining good oral health extends far beyond simply brushing twice a day. A California-based dentist with nearly 40 years of experience, Dr. Mark Burhenne, suggests there are often overlooked nuances to proper dental care. He recently shared seven common habits people should consider abandoning to improve their oral health, ranging from when to brush to how often to whiten teeth.

These recommendations, initially shared on Instagram on February 8th, challenge some widely held beliefs about dental hygiene. Dr. Burhenne’s advice centers on protecting the oral microbiome, preserving tooth enamel, and recognizing potential underlying health issues signaled by oral symptoms. Improving oral health is a key component of overall wellness, and these adjustments could have a significant impact.

Here’s a breakdown of the seven habits Dr. Burhenne recommends quitting:

1. Ditch Antibacterial Mouthwash

Contrary to popular belief, antibacterial mouthwash isn’t necessarily beneficial. Dr. Burhenne explains that these products can disrupt the natural oral microbiome – the community of microorganisms in your mouth – and even raise blood pressure by attacking healthy bacteria. He suggests oil pulling, a practice involving swishing edible oil in the mouth, as a healthier alternative.

2. Wait to Brush After Eating

Brushing immediately after a meal can actually be detrimental to your teeth. Dr. Burhenne advises waiting 30 to 45 minutes before brushing, as immediate scrubbing can erode tooth enamel. This delay allows saliva to naturally neutralize acids and remineralize the enamel.

3. Address Mouth Breathing in Children

If a child consistently breathes through their mouth, exhibits a forward head posture, or has dark circles under their eyes, Dr. Burhenne urges parents not to dismiss it as a phase. These can be “airway red flags” indicating potential underlying issues that require attention.

4. Limit Teeth Whitening

Although a brighter smile is appealing, frequent teeth whitening can cause irreversible damage. Tooth enamel doesn’t grow back, and repeated whitening treatments can lead to peroxide sensitivity, a sign of enamel erosion. Dr. Burhenne cautions against whitening teeth every few months.

5. Don’t Dismiss Snoring

Snoring is often considered a harmless quirk, but Dr. Burhenne argues it’s not normal. He explains that snoring indicates an obstructed airway and has been linked to serious health concerns, including heart disease, cognitive decline, and metabolic dysfunction.

6. Skip the Rinse After Brushing

A common practice is to rinse the mouth with water after brushing, but Dr. Burhenne recommends against it. He asserts that fluoride (or hydroxyapatite) in toothpaste needs time to work effectively, and rinsing washes away these beneficial minerals. Instead, simply spit out the excess foam.

7. Don’t Delay Dental Visits

Waiting until you experience pain to observe a dentist can mean missing a window of opportunity to reverse early-stage issues like cavities. Dr. Burhenne emphasizes that “pain is late-stage” and that preventative care is crucial for maintaining optimal oral health.

These recommendations highlight the importance of a holistic approach to oral health, considering not just the mechanics of brushing and cleaning, but also the broader impact of habits on the oral microbiome and overall well-being. Prioritizing preventative care and understanding the nuances of dental hygiene can contribute to a healthier mouth and a healthier life.

As dental research continues to evolve, staying informed about best practices is essential. What further insights will emerge regarding the connection between oral health and systemic disease? Only time and continued study will tell.

What are your thoughts on these dental health tips? Share your experiences and questions in the comments below!

Disclaimer: This article is for informational purposes only and not a substitute for professional medical advice. Always seek the advice of your doctor with any questions about a medical condition.

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Health

ADHD Drugs: New Insights into How They Work

by Dr. Priya Deshmukh - Senior Editor, Health
written by Dr. Priya Deshmukh - Senior Editor, Health

For decades, the prevailing understanding of how medications like Adderall and Ritalin treat Attention-Deficit/Hyperactivity Disorder (ADHD) has centered on the idea that these drugs primarily boost dopamine levels in the brain. This neurochemical imbalance – a perceived deficiency in dopamine – was thought to be the root cause of ADHD symptoms like inattention, impulsivity, and hyperactivity. However, a growing body of research is challenging this long-held belief, suggesting a far more complex picture of how these medications actually work and, crucially, what drives the symptoms of ADHD itself.

The traditional dopamine hypothesis, while helpful in developing initial treatments, may have oversimplified a much more nuanced neurological process. Recent studies are pointing towards a potential dysfunction in the way the brain processes dopamine, rather than simply a lack of it. This shift in perspective could have significant implications for the development of new and more effective treatments for ADHD, potentially moving beyond simply increasing dopamine availability to addressing the underlying mechanisms of its regulation and utilization. Understanding the connection between dopamine and ADHD is becoming increasingly complex.

Beyond Dopamine: A Triple Reuptake Inhibitor Offers New Insights

The development of centanafadine, a novel triple reuptake inhibitor currently under investigation, is fueling this re-evaluation. Unlike traditional ADHD medications that primarily target dopamine, centanafadine also affects norepinephrine and serotonin levels in the brain. Centanafadine’s clinical trials have shown promising results in both adolescents and adults, suggesting that a broader approach to neurotransmitter regulation may be more effective than solely focusing on dopamine.

Early findings from studies, including those highlighted by MGH Psychiatry News, indicate that centanafadine’s impact extends beyond simply improving focus and reducing impulsivity. Researchers are observing improvements in emotional regulation and overall cognitive function, suggesting that the drug may be addressing some of the core deficits associated with ADHD that aren’t directly tied to dopamine levels. ADDitude Magazine reports on the effectiveness of centanafadine for both adults and children.

The Role of Neurochemical Dysregulation and Brain-Behavior Interactions

The emerging understanding of ADHD is increasingly framed as a disorder of brain-behavior interactions, driven by complex neurochemical dysregulation. Research published in Wiley emphasizes that ADHD isn’t simply about a single neurotransmitter deficiency, but rather a disruption in the intricate interplay between various brain systems and their impact on behavior. This perspective highlights the need for a more holistic approach to treatment, one that considers the individual’s unique neurochemical profile and behavioral patterns.

This isn’t to say that dopamine is irrelevant. It remains a crucial neurotransmitter involved in motivation, reward, and attention. However, the focus is shifting towards understanding how the brain utilizes dopamine – how it’s released, reabsorbed, and received by neurons – rather than simply assuming that more dopamine always equates to better function. The existing medications, like Vyvanse, continue to be effective for many, but the evolving understanding may lead to more targeted and personalized therapies.

What Does This Mean for the Future of ADHD Treatment?

The re-evaluation of the dopamine hypothesis doesn’t invalidate existing treatments, but it does open the door to new avenues of research and therapeutic development. The success of centanafadine, with its broader neurotransmitter targeting, suggests that addressing multiple neurochemical systems simultaneously may yield more comprehensive and lasting benefits for individuals with ADHD. Further research is needed to fully elucidate the complex neurobiological mechanisms underlying ADHD and to identify biomarkers that can predict treatment response.

As our understanding of ADHD evolves, so too will the approaches to managing this complex condition. The future of ADHD treatment likely lies in personalized medicine, tailoring interventions to the individual’s specific neurochemical profile and behavioral needs. This shift in perspective promises a more nuanced and effective approach to helping individuals with ADHD thrive.

What are your thoughts on these emerging findings? Share your experiences and perspectives in the comments below.

Disclaimer: This article is for informational purposes only and should not be considered medical advice. Please consult with a qualified healthcare professional for diagnosis and treatment of any medical condition.

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Health

COVID-19 Vaccine During Pregnancy Linked to Lower Preeclampsia Risk: Study

by Dr. Priya Deshmukh - Senior Editor, Health
written by Dr. Priya Deshmukh - Senior Editor, Health

Recent research suggests a significant link between COVID-19 vaccination during pregnancy and a reduced risk of preeclampsia, a potentially dangerous complication characterized by high blood pressure and reduced blood flow to the fetus. The findings, stemming from a large-scale observational study, offer encouraging news for expectant mothers and reinforce public health recommendations regarding vaccination.

Preeclampsia affects an estimated 3 to 8% of pregnancies globally and remains a leading cause of both maternal and neonatal morbidity and mortality. Understanding and mitigating risk factors for this condition is therefore a critical area of research. This new evidence adds to a growing body of knowledge demonstrating the protective benefits of COVID-19 vaccination extending beyond preventing severe illness in the mother.

The study, conducted by the INTERCOVID consortium led by the University of Oxford and published in eClinicalMedicine, analyzed data from 6,527 pregnant women recruited across 18 countries – including the United States, Europe, Latin America, Africa, and Asia – between 2020 and 2022. This broad geographic representation underscores a concerted global effort to understand maternal and perinatal outcomes during the pandemic. Researchers found that those who received a booster dose of a COVID-19 vaccine experienced a 33% reduction in preeclampsia risk. The benefit was even more pronounced among women with pre-existing health conditions, such as diabetes, hypertension, or thyroid disorders.

The data revealed a strong association between SARS-CoV-2 infection during pregnancy and an increased risk of preeclampsia – a 45% increase rising to 78% among unvaccinated women. In stark contrast, the risk was reduced by 33% in those who had received a booster dose. “These results move beyond the already known benefits of COVID-19 vaccination during pregnancy,” stated José Villar, principal investigator of the INTERCOVID consortium at the University of Oxford. “Now we have evidence that maternal vaccination can influence pathways involved in the development of preeclampsia, suggesting a broader immunological or vascular benefit.”

Understanding the Link Between COVID-19 and Preeclampsia

Researchers have long recognized shared physiological mechanisms between COVID-19 and preeclampsia, including endothelial damage, systemic inflammation, and vascular dysfunction. The vascular damage induced by SARS-CoV-2 can exacerbate the prothrombotic and antiangiogenic environment characteristic of preeclampsia, increasing the risk of hypertensive and placental complications. The study suggests vaccination may mitigate this inflammatory and vascular damage associated with infection, impacting both blood pressure regulation and viral entry into cells.

The protective effect of vaccination isn’t solely attributed to preventing infection. “It’s a complex issue and may involve several mechanisms that will be the subject of future investigations,” explained Villar. “The important thing is that it’s not always necessary to know all the biological details to recommend a public health measure that, if confirmed, could have a very important impact. It wasn’t necessary to understand the exact mechanism by which smoking causes lung cancer to recommend that people not smoke.”

Implications for Pregnant Individuals

The study’s findings support current recommendations for COVID-19 vaccination during pregnancy, particularly for those with pre-existing conditions that increase their risk of preeclampsia. “These results support the vaccination of all pregnant women according to local regulations, especially those with pre-existing problems related to preeclampsia,” Villar emphasized. “The first objective is to implement the regulations and ensure that, in addition to the primary effect, there are likely to be other non-minor benefits.”

Researchers are planning a large-scale, multicenter, international randomized controlled trial to further confirm these findings. “This represents complex and requires careful design, but could be carried out in a relatively short period of time. The potential magnitude of the effect warrants serious consideration by health authorities,” Villar added.

Reference: Paolo Ivo Cavoretto, José Villar, Antonio Farina, Marta Fabre et al. “COVID-19 vaccination status during pregnancy and preeclampsia risk: the pandemic-era cohort of the INTERCOVID consortium”. eClinicalMedicine, 2026.

This research adds to the growing evidence base supporting COVID-19 vaccination as a crucial component of prenatal care. As the scientific community continues to investigate the complex interplay between COVID-19, vaccination, and pregnancy outcomes, staying informed and following the guidance of healthcare professionals remains paramount.

Have you discussed COVID-19 vaccination with your healthcare provider during pregnancy? Share your thoughts in the comments below.

Disclaimer: This article provides informational content and should not be considered medical advice. Always consult with a qualified healthcare professional for personalized guidance regarding your health and treatment options.

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