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Over the past few centuries, yellow fever outbreaks have led to numerous cases and related fatalities. While the World Health Organization says most severe yellow fever (YF) cases have a fatality rate of around 39%, recent data from South America indicates an unfortunate increase in deaths.
Since 2024, the Republic of Colombia has faced an active YF outbreak. As of February 21, 2025, 40 cases have been confirmed (17 in 2025), with 19 related deaths, representing a case fatality rate (CFR) of 47%. 

For over 100 years, a vaccine has been deployed 4 billion times to prevent tuberculosis (TB) outbreaks. Unfortunately, versions of the Bacille Calmette-Guérin (BCG) vaccine have only been about 50% protective at reducing severe disease.
To understand this shortcoming and why TB treatments often fail, researchers recently identified genes that the tuberculous bacteria rely on to survive and spread. These genes could help stop the spread of the world's leading infectious disease killer.

By I. Edwards HealthDay ReporterTUESDAY, March 11, 2025 (HealthDay News) — The U.S. government program that provides free at-home COVID tests is no longer accepting orders.The Administration for Strategic Preparedness …

Often ranked as one of the most trusted healthcare providers, pharmacists are uniquely positioned to influence vaccination rates in the United States. Located within five miles of most Americas, digital pharmacists have become an ideal source of relevant vaccine information and related services, such as appointment-based vaccinations.

Since the Zika virus epidemic was a public health emergency of international concern in 2016, researchers have been investigating how this mosquito-transmitted disease spreads.
These efforts are essential as some studies have forecasted that over 1 billion people could be impacted during Zika outbreaks by 2050.

The Maharashtra state has reported the most cases of Guillain-Barré syndrome (GBS), a rare neurological illness that damages peripheral nerves, during India's largest outbreak ever,
Since January 2025, about 300 GBS cases and 21 related fatalities have been reported in eight states in India.
According to a World Report (Volume 405, Issue 10481) published by The Lancet on March 8, 2025, experts have linked these GBS infections with  Campylobacter jejuni. This bacteria is one of the most common causes of food poisoning.

Over the past few years, consumer trust in the health industry has diminished. According to a recent Pew study, 57% of people said false and misleading information about the virus and vaccines contributed to society's problems.
Furthermore, many people have unanswered immunization questions due to the postponement of the U.S. Centers for Disease Control and Prevention (CDC) vaccine meeting for February 26, 2025.

With international travel accelerating in 2025, a recent study offers an overview of Chikungunya infections in mainland Europe over the past two decades. This research article provides this mosquito-transmitted disease's epidemiological characteristics, diversity, and clinical manifestations.
The Chikungunya virus (CHIKV) was first recognized during an outbreak in southern Tanzania in 1952. It is primarily transmitted to humans through the bite of infected female mosquitoes, most commonly Ae. albopictus and Ae. Aegypti.

For many months, the World Health Organization has confirmed that the spread of the poliovirus remains a Public Health Emergency of International Concern.
This concern was validated during the last few weeks of 2024, when vaccine-derived poliovirus type 2 (VDPV2) genetically linked to the Nigeria lineage was detected in wastewater samples in 16 cities in five European countries: Spain, Poland, Germany, the United Kingdom, and Finland.