The initiative, known as the Big Catch-Up and led by the World Health Organization, UNICEF and Gavi, the Vaccine Alliance, concluded in March after a three-year effort to restore immunization coverage disrupted by the pandemic.

By the end of December 2025, the campaign had reached an estimated 18.3 million children aged under five across 36 countries in Africa and Asia, delivering more than 100 million vaccine doses, according to a joint statement. Of those, around 12.3 million children had never received any prior vaccination, while 15 million had not previously been immunized against measles.

Health systems worldwide faced severe disruption during the COVID-19 crisis, leading to missed routine immunizations and a resurgence of preventable diseases including measles and polio. The agencies said the campaign also strengthened national immunization systems by improving their ability to identify children who had previously been missed.

Tedros Adhanom Ghebreyesus said the initiative had helped reverse one of the pandemic’s major health setbacks by reaching children who had been excluded due to service disruptions.However, officials warned that significant obstacles persist.

The agencies highlighted declining foreign aid and widening gaps in routine immunization, noting that measles outbreaks have increased globally, with approximately 11 million cases reported in 2024.Kate O’Brien said growing politicization of vaccines and health issues posed a serious concern, even as trust in frontline health workers remained relatively strong.

Sania Nishtar pointed to the role of social media in amplifying misinformation, saying digital platforms often incentivize the spread of misleading or false content about vaccines.

Ephrem Lemango added that algorithm-driven amplification of anti-vaccine narratives, combined with reductions in global health funding, could undermine progress and risk reversing gains made through the campaign.

The Navajo Nation, the largest Native American reservation in the United States spanning roughly 27,000 square miles across New Mexico, Arizona and Utah, is confronting the dual pressures of historical trauma and modern socio-economic challenges as its people work to preserve cultural identity.

Home to the Navajo, or Diné, meaning “the people,” the region faces persistent issues including inadequate housing, limited infrastructure and restricted access to technology. These challenges have shaped daily life for many residents while also influencing patterns of migration and cultural continuity.

Elders point to the long-term impact of U.S. assimilation policies, particularly the forced placement of Indigenous children in boarding schools during the 20th century. Virginia Brown, 69, recalled being taken from her family at the age of six and punished for speaking her native language. Such experiences contributed to the erosion of cultural practices and created generational gaps in language transmission.

The UNESCO classifies the Navajo language as “vulnerable,” with recent declines in fluency despite it remaining one of the most widely spoken Native American languages. In response, schools such as Holbrook High School have introduced language and culture programmes aimed at revitalising linguistic heritage among younger generations.

Younger community members express concern about shifting cultural priorities. Teenagers in towns such as Tuba City describe a growing influence of social media and mainstream culture, which some believe is reducing engagement with traditional practices.

At the same time, efforts to sustain cultural traditions continue across generations. Artisans like Drake Mace, who raises Navajo-Churro sheep and weaves rugs using techniques passed down within families, maintain longstanding practices tied to identity and livelihood.

Economic and infrastructural constraints remain significant. Around 30% of households lack running water, requiring residents to transport water from communal sources. These conditions have led some families to relocate to nearby towns, while others balance traditional lifestyles with modern employment.

Tara Seaton, 48, works remotely for Texas State University while living on the reservation, using satellite internet services to maintain connectivity. Such arrangements illustrate the blending of traditional living with contemporary economic opportunities.

Community leaders emphasise that cultural evolution does not necessarily equate to loss. Residents note that practices and values have adapted over time while maintaining continuity with ancestral traditions.

Cultural preservation initiatives include public performances by groups such as the Diné Tah Navajo dance troupe, which present traditional dances in schools and community events. Organisers describe these performances as a means of reconnecting younger generations with heritage while addressing historical trauma.

Entrepreneurs and activists are also working to strengthen cultural and economic resilience. Ira, a community member involved in agricultural and textile initiatives, described efforts to revive traditional weaving while integrating sustainable practices such as hemp cultivation. He also highlighted mentorship programmes and Indigenous farming cooperatives aimed at strengthening community networks and trade.

These initiatives reflect a broader trend in which Navajo cultural practices extend beyond reservation boundaries. Migration to urban and border areas has contributed to a diaspora where traditions such as weaving, silversmithing and language use continue in new settings.

Community members say the concept of Hózhó, which emphasises balance, harmony and beauty, remains central to Navajo identity. As cultural practices evolve alongside changing economic and social conditions, efforts to preserve language, traditions and community ties continue across generations.

Ambiguous romantic arrangements, often referred to as “situationships”, are increasingly shaping relationship patterns among younger adults, particularly within Generation Z.

These arrangements, which typically lack clear commitment or defined expectations, are being linked by mental health practitioners to rising levels of emotional stress, anxiety and self-doubt among young people.Mental health professionals and counsellors say the defining feature of such relationships is uncertainty.

Unlike traditional partnerships, situationships often operate without mutual agreement on exclusivity, long-term intent or emotional boundaries. While some individuals enter these arrangements voluntarily, practitioners report that many struggle with the psychological consequences over time.

A Delhi-based clinical psychologist said that the lack of clarity can create a persistent state of emotional instability. “Human beings generally seek predictability in close relationships,” the psychologist said. “When that predictability is missing, it can lead to heightened anxiety and rumination.”

A 23-year-old postgraduate student from Chandigarh, who requested anonymity, described her experience in what she later identified as a situationship lasting nearly 18 months. She met her partner through mutual friends during her undergraduate studies. Initially, the connection appeared to follow a conventional trajectory, with frequent communication and emotional intimacy.

Over time, however, she said the relationship became increasingly ambiguous. “We spoke every day, shared everything, but whenever I asked what we were, the answer would change,” she said. “Sometimes it felt like a relationship, sometimes it didn’t exist at all.”The absence of definition led to repeated cycles of reassurance and withdrawal.

According to her account, periods of closeness were often followed by emotional distance, leaving her uncertain about the status of the relationship. “You start questioning yourself,” she said. “Whether you are asking for too much, or whether something is wrong with you.

”She reported that the experience affected multiple aspects of her daily life. Academic performance declined, sleep patterns became irregular, and she experienced persistent stress. “I would check my phone constantly,” she said. “Even small changes in his behaviour would affect my entire day.

”The relationship ended without a formal conversation, which she described as “an absence rather than a breakup”. The lack of closure prolonged the emotional impact. “It’s harder to move on from something that was never clearly defined,” she said.

Counsellors working with young adults report that such experiences are increasingly common. A therapist based in Mumbai said that many clients describe similar cycles of emotional dependence and ambiguity. “There is often a mismatch in expectations,” the therapist said.

“One person may treat it as a committed relationship, while the other maintains distance.”This dynamic can lead to what psychologists describe as intermittent reinforcement, where inconsistent emotional responses strengthen attachment rather than weaken it. “The unpredictability keeps people engaged,” the therapist said.

“They hold on to the positive moments and hope they will return.”Research in behavioural psychology has long established that inconsistent rewards can create strong behavioural patterns, a concept practitioners say is relevant in understanding why individuals remain in such arrangements despite distress.Social factors also contribute to the prevalence of situationships.

A sociology researcher at a university in Bengaluru said that shifting attitudes toward commitment, combined with increased use of dating applications, have altered relationship norms. “There is greater flexibility, but also greater ambiguity,” the researcher said. “Labels are often avoided to keep options open.”

Medical and mental health professionals emphasise that prolonged emotional stress can have measurable effects on physical health. A general physician in Srinagar said that patients in their late teens and early twenties increasingly present with stress-related symptoms, including headaches, fatigue and gastrointestinal issues.

“While these symptoms are not always directly attributed to relationships, discussions often reveal underlying emotional stress,” the physician said. “Chronic stress can disrupt sleep, weaken immunity and affect overall well-being.

”Psychologists note that unresolved emotional strain can also contribute to anxiety disorders and depressive symptoms. The absence of closure, in particular, is cited as a factor that complicates recovery. “Closure provides a cognitive endpoint,” the Delhi-based psychologist said. “Without it, individuals may continue to revisit the experience repeatedly.”

Technology plays a central role in shaping these relationship dynamics. Messaging platforms and social media enable continuous contact, but also create new forms of uncertainty. Read receipts, delayed responses and online activity indicators can all become sources of anxiety.

The Chandigarh student said that digital communication intensified her experience. “You can see when someone is online, but not replying to you,” she said. “It makes you overthink everything.”Experts say that constant connectivity can blur emotional boundaries, making it difficult for individuals to disengage.

“In earlier generations, physical distance created natural pauses,” the Mumbai-based therapist said. “Now, the connection is always present, even when the relationship is unclear.”

Mental health professionals emphasise the importance of awareness and communication in addressing the impact of situationships. Identifying patterns of uncertainty and emotional imbalance is often the first step in intervention.Therapists report that encouraging individuals to establish personal boundaries and articulate expectations can help reduce distress.

“Clarity, even if it leads to an uncomfortable outcome, is generally healthier than prolonged ambiguity,” the Delhi-based psychologist said.Educational institutions and youth organisations have also begun incorporating discussions on relationship health into counselling services.

A student counsellor at a university in Punjab said that workshops on emotional well-being now include topics such as communication, consent and boundary-setting.

The Chandigarh student said that seeking professional help was a turning point in her recovery. Through counselling, she began to recognise patterns in the relationship and their impact on her mental health. “It helped me understand that it wasn’t just about the other person,” she said.

“It was also about what I was accepting.”She added that the experience has influenced her approach to future relationships. “Now I know that clarity is not something extra,” she said. “It’s something necessary.”