There's been an alarming increase of respiratory and gastrointestinal viruses in the United States lately, causing anxiety about a so-called "quad-demic". According to surveillance reports, influenza, COVID-19, RSV and norovirus are at very high levels everywhere. While the surge aligns with patterns typical for this season, several epidemiologists view simultaneous infections of such proportions to pose risks not only to individual healthcare but public health.

The incidence of the quad-demic should vary with seasonal patterns, vaccination rates, and public health interventions. Each virus alone is relatively easy to manage; however, the effect of all together could lead to overburdening of health care facilities and increase risks for those at higher risk. Continuing surveillance, early testing, and proactive prevention measures will play an important role in the control of these infections going forward.

While the term "quad-demic" sounds daunting, it must be taken into perspective. For years, we have had all these viruses together, and we have the capabilities to mitigate some of the risk. Vaccination, proper hygiene and using common sense helps individuals get through the season unscathed. Is the quad-demic a permanent fixture or just another seasonal wave? Let's break this down.

What is the Quad-demic?

Typically, flu, COVID-19, and RSV have been the primary culprits behind seasonal respiratory infections. However, norovirus, a highly contagious stomach bug, has emerged as a fourth significant player, inducing fears of a more severe and widespread viral outbreak. According to the Centers for Disease Control and Prevention (CDC), the U.S. recorded nearly 500 norovirus outbreaks between August and December 2023, a substantial rise from the previous year’s numbers.

While the term "quad-demic" may sound ominous, the seriousness and consequences of such infections should be weighed in light of the U.S. healthcare system's experience with managing viral surges since the start of the COVID-19 pandemic.

1. Influenza (Flu)

Flu continues to be one of the most common and alarming seasonal illnesses. In the period spanning from 2023 to 2024, there were approximately 40 million cases of flu, and thousands of hospitalizations along with reported 47 deaths have been reported this season. Flu symptoms include fever, chills, cough, sore throat, muscle pain, and fatigue, with most recovering within a week or two but risky factors for severe illness effects occur in young children, elderly, and people with chronic conditions.

2. Covid-19

Despite its reduction from the first pandemic peak, COVID-19 is still rampant. The CDC estimates that alone between October and December 2023, there were between 2.7 and 5 million cases in the U.S. Hospitalization has increased by cities such as Los Angeles, Chicago, and New York. Symptoms are closely similar to the flu, fever, cough, and fatigue but uniquely presents in some cases as loss of taste and smell.

3. RSV

RSV is the most common cause of lower respiratory infections in infants, older adults, and immunocompromised individuals. While RSV peaked late in 2023 and early 2024, it continues to be a threat because it can lead to bronchiolitis and pneumonia. It is very similar to the common cold, presenting with symptoms such as congestion, runny nose, coughing, and fever, which can make it difficult to differentiate from flu or COVID-19 without testing.

4. Norovirus

Norovirus, also called the "stomach flu," is a highly contagious infection of the gastrointestinal tract, not a respiratory virus. It transmits quickly from contaminated food and water and contact with contaminated surfaces, causing such symptoms as diarrhea, vomiting, nausea, and stomach pain. Cases have shot up, the CDC said Monday, with reports of outbreaks surging compared with last year.

Is There a Challenge In Diagnosis Due to Overlapping Symptoms?

The greatest challenge during the quad-demic is how the four viruses are alike and thus make identification very hard with no testing applied. Most cases present symptoms common to all viruses: fever, tiredness, body pains, and respiratory, which includes coughing and congestions for influenza, COVID-19, and RSV; the other would be norovirus symptoms as nausea and vomiting can appear even in extreme influenza and COVID-19. This overlap increases the risk of misdiagnosis and delayed treatment, hence the need for early testing and proper medical guidance.

Also Read: Is US Preparing For A Quad- demic 2025?

Effective Prevention Strategies That Work

The best defense against these viruses is a combination of vaccines, hygiene, and lifestyle precautions. While lifestyle modifications are highlighted as part of the constant need to eat healthy, ensure daily movement and drinking adequate amount of fluids. There is a sure short two preventive strategies that are effective:

Vaccination

• Flu vaccine: Annual flu shots reduce the severity of infection, allergic flare ups and hospitalizations.
• COVID-19 vaccine: Though COVID-19 cases have declined, vaccination remains critical in preventing severe outcomes.
• RSV vaccine: Available for those aged 60 years and older, especially those with underlying conditions.
• Norovirus vaccine: No vaccine is yet available, but mRNA vaccine research is in progress.

Hygiene and Sanitation

• Washing hands frequently with soap and water for at least 20 seconds, especially after public exposure.
• Disinfect frequently touched surfaces regularly, use sanitiser when outside.
• Avoid close contact with infected people and wear masks.

Do You Need To Wear A Mask All The Time?

While debates on masked wear continue on, experts on mask-wear affirm that this does not only have a historical precedent but works towards reducing airborne viruses spreading within the environments. Hospitals, though, ensure masking in key sections of themselves. Publicized mask-wear remains a discretion, though massing indoors still goes a longer way in cases like peak flu seasons.

If you notice the symptoms of these viruses, then it's best to be confined at home and avoid having face-to-face interaction with others and seek immediate attention from your physician if your condition worsens. Quarantining for some days can decrease the spread of infection.

As we move into the first half of 2025 and beyond, staying informed and proactive is the best strategy for maintaining health and avoiding unnecessary panic. The key takeaway? Stay vigilant, but don’t be alarmed—these viruses are here, but so are the means to fight them.

A young Internal Medicine doctor from Chandigarh has highlighted shocking malpractices followed by a well-known private hospital.

In a widely shared video posted on social media platform Instagram, Dr Prabhleen Kaur alleged that all patients arriving at the hospital in the city are being forcibly kept in Intensive Care Units (ICUs) even when it is not required.

The doctor had joined the hospital, as it was paying well and was near her clinic. However, seeing the blatant scam, she resigned in just one day.

Also Read: Scientists Link Vaping to 2 Types of Cancer; DNA-Damaging Chemicals to Blame

“I joined a very reputed hospital. I thought I would work there in the mornings and run OPD at my own clinic in the evenings. They were paying really well, no doubt about that,” the doctor said in the video.

The doctor alleged that the hospital “just needed a physician for the show”, while the entire handling of patients was being done by the owner, a gynecologist.

“But on my very first day, I realised that they only needed a physician in name. The hospital owner, who was a gynaecologist and not a physician, was managing all the patients herself. That means she would decide every patient should be admitted, and she would also decide that every admitted patient should be kept in the ICU – and kept there for as many days as possible,” Kaur said.

She further claimed that the goal at the said hospital was to make the patients remain admitted in the ICU for as long as possible. Kaur added she was deeply disturbed seeing this and refused to be part of a system that “harms patients for money.”

“It would have been my name, but their wrongdoing. So I resigned, because I cannot allow someone to use me as a front for unethical practices,” she said.

The doctor did not mention the name of the hospital. And HealthandMe could not independently verify the details and the authenticity of the post.

However, the incident reignites concerns over accountability, patient safety, and standards of care in the country.

The video went viral and the netizens found it concerning, and some also pointed out that such issues are common with many hospitals across the country.

"Unfortunately, most doctors are doing this unethical practice these days,” a user said.

“No surprise— the moment you enter a hospital, the first question is about insurance coverage. Feels like treatment comes second and billing comes first,” added another.

Some also lauded the doctor for resigning and sounding the alarm.

“Salute to your integrity. Rest of the Indians are just after making money,” said a user, while another noted: “Respect to this doctor for choosing her conscience over money".

Also read: NASA’s Artemis II Mission To Test Human Health in Deep Space

Other Such Incidents

This is not the first such incident of hospital malpractice in the country.

Days earlier, a doctor from Assam called out private hospitals for overcharging patients with inflated medicine prices and unnecessary lab tests.

Dr Priyam Bordoloi said that corporate hospital chains rely on “predatory” practices and become a “financial sinkhole” for patients.

Earlier in January this year, a viral video with allegations of gross medical negligence and institutional apathy at Dhubri Medical College and Hospital (DMCH) sparked public outrage.

The video showed a family accusing hospital staff of failing to provide basic care, delaying critical dialysis treatment, and obstructing an emergency transfer.

The incident involved a 74-year-old Fulchand Chowdhury, whose condition reportedly worsened due to lapses in ICU monitoring, sanitation, and patient safety.

The family claimed they were forced to care for him themselves and faced resistance when seeking transfer to a private facility.

Also read: Bob Harris: BBC Radio 2 Host Hospitalized For Prostate Cancer Treatment

Who Should Be Kept In The ICU?

In January 2024, India launched guidelines for hospitals on ICU admissions and directed that hospitals cannot admit critically ill patients to the ICU without the consent of the patient and family.

According to the latest guidelines, patients who are critically ill should not be admitted to an ICU if they do not give their consent.

"Critically ill patients should not be admitted to the ICU; if the patient or next-of-kin informed refusal to be admitted in ICU."

Nearly 60 years after humanity first set foot on the Moon, NASA has launched its historic Artemis II mission, marking the first crewed journey around the lunar surface.

The nearly 10-day flight was launched successfully on April 1 from the Kennedy Space Center (KSC) in Florida at 6:24 p.m. EDT.

Four astronauts were launched to the surface of the Moon aboard Orion, which lifted off atop NASA's Space Launch System.

The Orion spacecraft flight carries NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, along with Canadian Space Agency astronaut Jeremy Hansen.

The crew aims to loop around the moon and return to Earth on a free-return trajectory, reaching roughly 4,700 miles (7,560 kilometers) beyond the moon's far side — farther than Apollo 8's historic lunar flyby and the most distant journey ever attempted by humans.

During the 10-day journey, the four astronauts will also perform several science experiments, along with scientists on Earth, to facilitate science investigations to inform future human spaceflight missions.

NASA stated that the Artemis II science operations will lay the foundation for safe and efficient human exploration of the Moon and Mars.

Health Research in Space

• Artemis Research for Crew Health and Readiness (ARCHeR)

The study will evaluate how crew members perform individually and as a team throughout the mission, including how easily they can move around within the confined space of their Orion spacecraft.

• A Virtual Astronaut Tissue Analog Response (AVATAR)

• The Immune Biomarkers

Scientists will analyze blood and saliva samples from Artemis II crew members to see how deep space changes the immune system.

• Artemis II Standard Measures

Crews are supplying a consistent set of health information to a data bank so that future researchers can learn more about astronaut health.

• Radiation Studies

Equipment will monitor radiation levels inside and outside the Orion capsule to help characterize the deep space environment.

“The findings are expected to provide vital insights for future missions to destinations beyond low Earth orbit, including Mars,” said Laurie Abadie, an aerospace engineer for the program at NASA’s Johnson Space Center in Houston.

“The lessons we learn from this crew will help us to more safely accomplish deep space missions and research,” she said.

Steven Platts, chief scientist for human research at NASA Johnson, explained the mission will need to protect against challenges, including exposure to higher radiation levels than on the International Space Station, since the crew will be farther from Earth.

“Together, these studies will allow scientists to better understand how the immune system performs in deep space, teach us more about astronauts’ overall well-being ahead of a Mars mission, and help scientists develop ways to ensure the health and success of crew members,” he said.

The emerging COVID-19 BA.3.2 variant, dubbed Cicada and detected in 23 countries, may not pose a significant global threat, claimed a study.

The 2025 study, published in the mBio journal, showed that the immune response of the BA 3.2 COVID variant from vaccines or prior infection is less effective than against the original strain. The antibody effectiveness is three times lower against the BA.3.2 variant. However, it does not mean that there is no protection at all.

“BA.3.2 showed intermediate neutralization, representing a 3-fold reduction compared to the ancestral strain,” said the researchers from the Icahn School of Medicine at Mount Sinai, US.

“BA.3.2 occupied an intermediate but distinctly separate position,” they said, adding that the variant “shows substantial immune escape potential that threatens protection”.

In the study, the researchers used antigenic mapping to assess neutralizing antibody responses in 56 adults with varied exposure histories following KP.2 vaccination against emerging variants, including LP.8.1, LF.7.1, NB.1.8.1, XFG, and BA.3.2.

While KP.2 vaccination enhanced neutralization against homologous variants, substantial reductions in neutralizing activity were observed against emerging Omicron variants across all exposure groups.

Exposure history showed some influence on neutralization breadth, with self-reported vaccination-only participants exhibiting better cross-neutralization compared to individuals with hybrid immunity.

The findings highlight the ongoing challenge of maintaining vaccine effectiveness against evolving SARS-CoV-2 variants and argue for continuous updating of vaccines, the researchers said.

“Despite its extraordinary number of mutations, BA.3.2 is not able to overcome immunity from vaccination, finds study. Other variants were more capable of evading immunity. This indicates it is not a major real-world threat,” said Dr Rajeev Jayadevan, Ex-President of IMA Cochin and Convener of the Research Cell, Kerala, in a post on social media platform X. He was not part of the study.

What Is The BA.3.2 Variant?

BA.3.2 is a descendant of the Omicron BA.3 lineage. It is genetically distinct from the previously circulating JN.1 lineages (including LP.8.1 and XFG).

BA.3.2 comprises two major branches, BA.3.2.1 and BA.3.2.2. BA.3.2.2 also has substitutions like: K356T, A575S, R681H, and R1162P, the CDC report said.

What makes the BA.3.2 variant special is the “70 to 75 substitutions and deletions in the gene sequence of its spike protein”, according to the US CDC’s latest Morbidity and Mortality Weekly Report.

“BA.3.2 represents a new lineage of SARS-CoV-2, genetically distinct from the JN.1 lineages (including LP.8.1 and XFG) that have circulated in the US since January 2024,” said the CDC researchers.

“BA.3.2 mutations in the spike protein have the potential to reduce protection from a previous infection or vaccination,” they added.

Cicada Variant: Increased Risks To Children

However, the new Cicada variant with around 75 genetic changes in its spike protein is likely to disproportionately affect children, as per an expert, who noted its presence in the UK.

“Some people have done analysis on this, suggesting it may be more prevalent among young children. Children get infections all the time, but this might be something to do with the fact that they have never been exposed to Covid vaccines," Prof Ravindra Gupta, of Cambridge University, who advised the UK government during the pandemic, was quoted as saying to The Mirror.

“So this is something we’re looking at in the lab to try and work out why. The problem with this is that it is an infection that spreads fast. Eventually, it ends up in someone vulnerable," he added.

Symptoms seem to be similar to those of other recent variants and include

sore throat,

cough,

congestion,

fatigue,

headache

fever.

According to the CDC, the Cicada variant is also likely to raise gastrointestinal issues such as nausea or diarrhea.