The World Health Organization (WHO) and UNICEF today sounded the alarm as new data revealed that global vaccination coverage in 2021 is the lowest in a generation leaving around 25 million children without lifesaving immunization as the effects of the COVID-19 pandemic continued to disrupt health care globally.
“This is the largest sustained decline in childhood vaccination in approximately 30 years and the proportion of children who received the third dose of vaccines that contains diphtheria, tetanus and pertussis - which is against whooping cough - this is our marker for immunization coverage both within and across countries”, said Dr Kate O’BRIEN, WHO Director of Immunization, Vaccines and Biologicals today at a press briefing at the United Nations in Geneva.
This is the second year in a row with backsliding vaccination. WHO had hoped 2021 would be a recovery year as 101 countries still have net loss compared to 2021.
“In 2021 there were 25 million children who missed out on one or more doses of their DTP containing vaccines, through routine immunization services”, said WHO’s Director of Immunization, Vaccines and Biologicals. “This threatens increased outbreaks, deaths and for some who survived the illnesses that they otherwise would not have gotten, livelong consequences”.
WHO stressed that planning and tackling COVID-19 should go hand-in-hand with vaccinating for deadly diseases like measles, HPV, pneumonia and diarrhea.
“The pandemic is not over, we need to both sustain and maintain momentum on COVID-19 population through vaccination”. said Dr Kate O’BRIEN. “But it also means that we have to ensure vaccination for measles and HPV and pneumonia and diarrhea gets back on track urgently. That means catching up millions of children who have missed their vaccines in 2020 and 2021”. Dr. Brian also added that “it also means recovering immunization programs and sustaining that trajectory of essential immunization”.
At the moment, countries are off-track to achieve the global targets that require reaching every child with life-saving vaccine by 2030.
“The alarm is that we are witnessing the largest continued drop in vaccination in a generation”, said Ephrem Tekle LEMANGO, UNICEF Associate Director, Health Immunization speaking via zoom from New York. “At UNICEF we are deeply concerned about what this backsliding means for children, especially in those children who live in lower- and middle-income countries, even that it comes with dire consequences”.
According to UNICEF, inadequate coverage levels have resulted in avoidable outbreaks of measles and polio. Malawi and Mozambique reported outbreaks of wild polio after more than three decades. Somalia, Yemen, Nigeria, Afghanistan and Ethiopia have witnessed large measles outbreaks in the past year. UNICEF is deeply concerned that if countries don’t catch-up vaccinations, more outbreaks will occur.
“Unfortunately, not only did we not see a recovery, we - in fact - lost even more ground and we are already seeing the consequences of this”, said UNICEF’s Mr. Lemango. “Inadequate coverage levels have resulted in avoidable outbreaks of diseases such as measles and polio in the past 12-month period”,
A growing immunization gap combined with other factors such as severe acute malnutrition creates the condition for a child survival crisis.
“The other factor we must consider is the disproportionate impact of this immunity gap in countries with other risk factors such as fragilities, conflict, and above all now the current level of malnutrition that we are seeing as a result of the global food crisis, in particularly the drought affecting several countries in different regions”, said UNICEF’s Associate Director on Health Immunisation. He added that “a malnourished child has a weakened immune system, missed vaccinations can mean common childhood illnesses quickly become lethal”.
But the pandemic has also shown a source of hope. “Despite the difficulties, it’s clear from our collective lived experience the last 2 years that when political will, communities support, and funding - adequate funding - converge together, we can ensure that vaccination reach billions, in fact in the most hard to reach communities as well”, said Ephrem Tekle LEMANGO”.
Mr. Lemango stressed that “we have an opportunity in this moment to ensure that COVID-19 response helps boost immunization affects and does not further hinder them". He added that "most COVID-19 vaccination and routine immunization for children can nurture each other and can synergize each other”.
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New data showing that rivers were at their lowest level for decades last year provides further evidence that the climate crisis is real and countries must act immediately to protect themselves from the increasing threat to communities and livelihoods, the UN World Meteorological Organization (WMO) said on Thursday.
The key findings from WMO’s State of Global Water Resources 2025 report covering the hydrological cycle and extreme events in the five-year period to last year:
Highlighting the long-term decline in the Earth’s freshwater storage and glacier melt, WMO Secretary-General Celeste Saulo explained that the planet’s water reserves used to act as a planetary “savings account” that absorbed the occasional dry season, avoiding a water crisis. “One of the central stories of the 2025 report is what is happening to that savings account? And the simple answer is that we are depleting it,” she told journalists in Geneva.
Groundwater reserves are equally stretched and have been in decline since 2014, WMO’s report states, with nearly two-thirds of monitored wells worldwide showing levels lower than the historical norm and indicating a shift “further toward deficit…not recovery”.
“At the same time, we are seeing more water-related disasters,” Ms. Saulo said, while also stressing that the currently strengthening El Niño “will increase the risk of drought in some areas, and flooding in others”.
Glaciers disappearing
In 2025, for the fourth consecutive year, every major glaciated region on Earth lost ice mass, leading to short-term hazards including floods and long-term water insecurity, according to WMO.
Responding to a question about whether the changing global water cycle might have contributed to the deadly Nepal-China flooding disaster, Ms. Saulo explained that melting ice and rock was just one factor in the chain of events that ultimately sent a massive and deadly wall of water and debris downstream on 26 August, killing at least 1,367 people.
“You asked if it could happen again? Absolutely; the problem in this region is that there’s 63,700 glaciers at the last count,” she told a Press Conference in Geneva. “Even if you’re looking with remote sensing with satellites at these glaciers, you might see some faults, you might see some slight shifting, that does not mean necessarily catastrophic collapse. So, in order to plan for this, it’s very, very difficult. But the international community is looking very hard at ways in which we can bring people together to solve some of these monitoring issues.”
Data indicates that glaciers shrank between 2023 and 2025 with cumulative losses of 1,400 gigatonnes of water – or about one third of annual fresh water needs.
Every major glacier region on Earth lost ice for the fourth consecutive year.
“All 19 glacier regions around the globe lost ice; in Central Asia, Iceland, the Russian Arctic and western Canada and the United States, it was among the three worst years on record,” said Wayne Jenkinson, WMO’s Director of Hydrology and Cryosphere.
Some regions with smaller glaciers such as Central Europe, the Caucasus, the western Canada and the United States may already have reached “peak water”, Mr. Jenkinson warned.
“After this point, the glacier gives less meltwater each year simply because there is less ice left to melt. That matters for every community downstream that relies on water during hot, dry summers,” he explained.
Narelle van der Wel, WMO’s Head of Cryosphere Monitoring, Predictions and Services, stressed that while some further glacier loss is unavoidable, the eventual scale of the decline is not predetermined.
“Some glacier loss is inevitable, but total loss of glaciers is not yet inevitable,” she said, pointing to emissions reductions as central to limiting future losses.
Preparing for moving baselines
The report does not attribute every observed change to climate change alone. WMO says pressure on water resources and natural variability also contribute.
Mr. Jenkinson said governments need to prepare for “moving baselines” as historical patterns become less reliable.
“The situation 30 years ago is not where we are today,” he said. Countries, he added, need to prepare “for those changes that have really already arrived”.
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