The global challenge of HIV/AIDS remains one of the most pressing public health issues today. According to the latest data from UNAIDS, around 38.4 million people worldwide are living with HIV/AIDS, underlining the need for not only medical intervention but also comprehensive awareness, education, and social change. Despite the significant strides made in treatment and prevention, the confusion surrounding the relationship between HIV and AIDS still persists.

Young people have become influential advocates in the fight against HIV/AIDS. Research from UNICEF shows that youth-led initiatives can lower HIV transmission rates by as much as 45% in targeted communities. These young activists utilize digital platforms and peer-to-peer education to dispel myths, promote safe practices, and foster supportive environments for those affected by HIV/AIDS.

Dr Gowri Kulkarni, an expert in Internal Medicine, explains that while the terms HIV and AIDS are often used interchangeably, they are distinctly different. "HIV (Human Immunodeficiency Virus) is a virus that attacks the immune system, whereas AIDS (Acquired Immunodeficiency Syndrome) is a condition that occurs when HIV severely damages the immune system," she clarifies. To understand the implications of these differences, it's important to explore the fundamental distinctions between the two.

1. HIV is a Virus; AIDS is a Syndrome

HIV is the virus responsible for attacking the body’s immune system, specifically targeting CD4 cells, which are crucial for the body’s defense against infections. As HIV progresses, it destroys these cells, weakening the immune system over time. If left untreated, this continuous damage can lead to AIDS.

AIDS, on the other hand, is a syndrome, not a virus. Dr Kulkarni further elaborates that AIDS is a collection of symptoms and illnesses that emerge when the immune system is severely compromised due to prolonged HIV infection. It represents the most advanced stage of HIV, and is characterized by very low CD4 counts or the onset of opportunistic infections like tuberculosis, pneumonia, or certain cancers.

2. Not Everyone with HIV Develops AIDS

A key distinction to remember is that not everyone with HIV will progress to AIDS. Thanks to advancements in medicine, particularly antiretroviral therapy (ART), individuals living with HIV can manage the virus and maintain a healthy immune system for many years, or even decades, without ever developing AIDS. ART works by suppressing the virus to undetectable levels, effectively preventing the damage HIV would otherwise cause to the immune system.

Without treatment, however, HIV progresses through three stages:

- Acute HIV Infection: This stage occurs shortly after transmission and may include symptoms like fever, fatigue, and swollen lymph nodes.

- Chronic HIV Infection: Often asymptomatic or mildly symptomatic, the virus continues to damage the immune system but at a slower rate.

- AIDS: This is the final stage, marked by severe immune damage and the presence of infections that take advantage of the compromised immune defenses.

3. HIV is Transmissible; AIDS is Not

Another key distinction between HIV and AIDS is the way in which they are transmitted. HIV is highly contagious and can be transmitted through the exchange of bodily fluids such as blood, semen, vaginal fluids, and breast milk. It is primarily spread through unprotected sexual contact, sharing needles, or from mother to child during childbirth or breastfeeding.

AIDS, however, is not transmissible. It is not a disease that can be passed from one person to another. Rather, AIDS is the result of untreated, advanced HIV infection and is a direct consequence of the virus’s damage to the immune system.

4. Diagnosis Methods Differ

HIV and AIDS are diagnosed through different methods. HIV is diagnosed through blood tests or oral swabs that detect the presence of the virus or antibodies produced by the immune system in response to the virus. Early detection of HIV is crucial, as it allows for timely intervention and treatment, which can prevent the virus from progressing to AIDS.

AIDS, on the other hand, is diagnosed using more specific criteria. Dr Kulkarni notes that the diagnosis of AIDS is made when the individual’s CD4 cell count falls below 200 cells/mm³, or when opportunistic infections or certain cancers (such as Kaposi's sarcoma or lymphoma) are detected. Diagnosing AIDS involves a more thorough assessment of the individual’s immune function and overall health, as opposed to just the detection of HIV.

5. Treatment Goals Are Different

The treatment goals for HIV and AIDS differ significantly, although both involve antiretroviral therapy (ART). For HIV, the primary treatment goal is to suppress the virus to undetectable levels, thus maintaining a strong immune system and preventing further transmission of the virus. People living with HIV can often live long, healthy lives if they adhere to ART.

For individuals diagnosed with AIDS, the treatment plan becomes more complex. While ART remains an essential part of managing the virus, treatment for AIDS also focuses on addressing the opportunistic infections and secondary health complications associated with severe immune suppression. The goal of treatment for AIDS is not only to manage the HIV virus but also to improve the quality of life and extend survival by treating these secondary health issues.

Role of Community Engagement in Combatting HIV/AIDS

While the medical community has made great strides in managing HIV, the battle to curb its transmission is also a social and cultural issue. Dr Daman Ahuja, a public health expert, highlights that HIV/AIDS awareness and education are vital to reducing transmission rates and supporting those affected by the virus. "Young people, especially, have become key advocates in the fight against HIV/AIDS," says Dr Ahuja. "Research from UNICEF shows that youth-led initiatives can lower HIV transmission rates by as much as 45% in targeted communities."

Additionally, grassroots activism plays a significant role in raising awareness and addressing stigma. As the World Health Organization reports, community-based interventions have been proven to increase HIV testing rates and improve treatment adherence, which are crucial in the fight against the pandemic.

The ultimate goal of organizations like UNAIDS is to eliminate the HIV/AIDS pandemic by 2030. Achieving this requires global collaboration, from medical treatment advancements to public health strategies, education, and advocacy. Dr Kulkarni’s insight underscores the importance of early detection, treatment adherence, and community support in the fight against HIV/AIDS.

Dr Gowri Kulkarni is Head of Medical Operations at MediBuddy and Dr Daman Ahuja, a public health expert and has been associated with Red Ribbon Express Project of NACO between 2007-12.

PMOS is often discussed mainly in connection with periods, hormonal changes and pregnancy. However, women’s health is much broader than fertility. Changes linked to hormonal health can also influence weight, energy levels, skin, hair, metabolism and emotional well-being.

This is why women should not focus only on whether their periods are regular or whether they are planning a pregnancy. Looking at overall health can help identify concerns early and support better long-term well-being.

PMOS can affect more than periods

Changes in the menstrual cycle may be one of the first signs that something needs attention, but they are not the only concern. Women may also notice changes in weight, acne, hair growth or hair thinning, tiredness and mood.

Persistent or unusual changes should not be ignored, even if a woman is not planning to have children. Speaking to a healthcare professional can help identify the possible cause and decide whether further evaluation is needed.

Also read: Ozempic, Wegovy & PMOS: How GLP-1 Drugs Are Changing PMOS Treatment?

Think beyond fertility

Fertility is an important part of women’s health, but it should not be the only focus. Women should also pay attention to their overall metabolic health, including blood pressure, blood sugar, cholesterol and weight when appropriate.

A balanced diet, regular physical activity, adequate sleep and maintaining a healthy weight can support better health. Medical care should also take into account age, lifestyle, family history and existing health conditions.

Mental health matters too

Hormonal and reproductive health concerns can affect emotional well-being. Worries about periods, weight, appearance or future fertility may contribute to stress, anxiety or low mood. Women should feel comfortable discussing these concerns with their doctor. Mental health is an important part of overall health and should be addressed along with physical symptoms.

How can women take better care of their health?

Women can start by tracking changes in their menstrual cycle and paying attention to other symptoms. Regular physical activity, nutritious food, adequate sleep and stress management can support overall well-being.

Those planning pregnancy should discuss their plans with a doctor in advance. However, even women who are not planning pregnancy should continue regular health monitoring.

Also read: From Insulin Resistance to Fertility: Understanding the Metabolic Side of PCOS

Tips for long-term health

• Keep track of menstrual changes and other symptoms.

• Maintain a balanced and nutritious diet.

• Stay physically active.

• Prioritise good sleep and stress management.

• Monitor blood pressure, blood sugar and cholesterol when advised.

• Do not ignore persistent hormonal or menstrual changes.

• Discuss fertility plans early with a healthcare professional.

• Pay attention to mental and emotional health.

PMOS should not be viewed only through the lens of periods or pregnancy. Women’s health also includes metabolic, hormonal, physical and emotional well-being. By looking beyond fertility, monitoring health regularly and making healthy lifestyle choices, women can take better care of themselves at every stage of life.

When people think of Alzheimer's specifically, memory loss is usually the first thing that comes to mind — forgetting recent conversations, repeating questions, struggling to recall familiar names. But Alzheimer's rarely announces itself through memory alone. It can also show up in how a person communicates, makes decisions, behaves, and manages the everyday tasks that once came naturally. People often mistake dementia and Alzheimer's for the same thing; however, dementia is not a single disease but a broad term for a decline in memory, thinking, and reasoning severe enough to interfere with daily life. Alzheimer's disease is the most common cause of dementia, accounting for a majority of cases.

Signs Families Often Misread

These early changes are easy to misattribute. A person who withdraws from social life may seem to be "losing interest." Someone who grows irritable may be written off as difficult or set in their ways. A family member who lets bills slide may appear distracted rather than unwell. Only when such shifts persist and clearly depart from a person's usual character do they warrant closer attention.

Communication And Language

Difficulty finding a familiar word now and then is normal. But losing the thread of a conversation, or struggling to express thoughts that once came easily, is different — and when this worsens over time, it's often family and friends who notice first.

Judgement And Everyday Decision-Making

Independence can erode quietly. Someone who has handled the household finances for decades may start making uncharacteristic decisions or find bills confusing. Following a familiar recipe, managing medication schedules, or planning a routine outing may become surprisingly hard. Family members frequently pick up on these lapses in judgement before they notice any memory trouble at all.

Behaviour And Personality

A once-sociable person may pull back from hobbies and company. Others may become anxious, suspicious, or emotionally distant in ways that feel out of character. These shifts can be hard for loved ones to make sense of — especially when they seem intentional — but they often reflect real changes in how the brain is processing and responding to the world, not a change in who someone chooses to be.

Daily Functioning

There's a meaningful difference between misplacing your keys occasionally and repeatedly leaving objects in strange places with no memory of how they got there. Likewise, forgetting one appointment is ordinary; missing commitments again and again despite reminders is not. Trouble navigating familiar streets, preparing a simple meal, or keeping up with personal care can point to a broader change in cognitive function.

Not A Diagnosis In Itself

None of these changes automatically means Alzheimer's. Many have other causes — some of them treatable — which is exactly why a medical assessment matters: it helps identify what's actually going on and whether further evaluation is needed.

What helps: Patterns, Not Incidents

For families, tracking patterns is far more useful than reacting to isolated moments. When did the changes start? How often do they happen? Are they starting to affect independence? This kind of observation gives doctors much more to work with than a single anecdote.

How families respond matters too. Correcting or criticising someone for changes they can't control tends to breed frustration on both sides. A patient, supportive approach protects their dignity while making it easier to get them the care they need.

Alzheimer's, in short, is not only a disease of memory. Its earliest clues can surface in conversation, judgement, behaviour, or the small routines of daily life. Recognising these signs isn't about assuming the worst — it's about noticing when something is genuinely different, and knowing when that difference is worth a doctor's opinion.

By Dr. Tanushree Chawla, Neurologist, PB Health

For decades, childhood vaccination was one of the clearest public health success stories in Europe. But a new study published in The Lancet Regional Health—Europe, suggests that progress has started to slip, and in some countries, it has slipped quite noticeably.

The research led by a team from the Università Cattolica del Sacro Cuore in Rome looked at vaccination coverage across seven different vaccines in European Union countries, tracking data all the way from 1980 to 2024. What it found was not a sudden collapse, but something arguably more concerning: a slow, steady stall that has crept in over the last few years without much attention.

Which Childhood Vaccine Rates Dropped?

According to the research, recent declines were most widespread for vaccines against

• Hemophilus influenzae type b
• polio,
• hepatitis B
• diphtheria-tetanus-pertussis.

Where the Decline Is Happening

Since 2019, sixteen countries have seen vaccination rates drop for four or more of the vaccines studied. Bulgaria, Cyprus, Ireland, the Netherlands, Romania, and Sweden stood out in particular, with all seven vaccines showing a downward trend in recent years.

The pattern wasn't uniform everywhere, though. Germany and Spain saw declines in five of the seven vaccines, while France and Italy told a more mixed story, with four vaccines improving even as three others slipped.

At the higher end, Luxembourg and Portugal managed to maintain at least 95 percent coverage across all seven vaccines, a benchmark most countries are still trying to reach. Romania, on the other hand, fell below 80 percent, making it the lowest performer in the study.

Why This Is Happening Now

According to the researchers, the timing of this decline is not a coincidence. Most of it began somewhere between 2019 and 2022, a period that overlaps almost exactly with the Covid-19 pandemic and its aftermath. Routine vaccination services were widely disrupted during that time, and the study suggests that many countries simply haven't fully recovered since.

There's also a broader factor at play: vaccine hesitancy, which researchers describe as a growing contributor to the decline, separate from any pandemic-related disruption. In other words, this isn't only about missed appointments during lockdowns. It also reflects a shift in how some parents and communities are approaching vaccination altogether.

What This Means Going Forward

Vaccination remains one of the most effective tools available for preventing serious childhood diseases, and researchers are clear about what's at stake if this trend continues. A sustained drop in coverage doesn't just affect individual children; it also weakens herd immunity, making entire communities more vulnerable to diseases that had largely been kept under control for years.

The study was direct about what needs to happen next, stating that international, national, and community-level action will be necessary to reverse these trends. Without it, the progress that took decades to build could continue to erode, quietly, one missed vaccination at a time.