When the sun is out after a long winter, every one loves it. But not the people of Canary Islands. Tourists there are being warned about the "unusually high risk" of UV rays this week. The Ministry of Health for this holiday destination has urged both, residents and visitors to take extra precautions and preventative measures to limit the impact of sun exposure over their body and skin.

The Ministry observed Aemet, Spain's national weather agency for the forecast which showed higher than normal UV or ultraviolet radiation levels in the region. It is in this backdrop that everyone in the region are requested to be extra careful when they are out in the sun. UV levels are set to reach 7, which is a 'high risk' in La Palma, El Hierro, La Gomera and Gran Canaria. Other regions like Tenerife, Fuerteventura and Lanzarote are expected to reach a level 6, which is also classed as 'high risk'.

UV Index Explained

As per the World Health Organization (WHO), a UV index is a measure of the level of UV radiation, which ranges from zero upward. The higher the UVI, the greater potential for damage to skin and eye and the less time it takes for harm to occur, notes WHO.

The range 1 to 2 represents a low risk, 2 to 5 is moderate, 6 to 7 is at high risk, 8 to 10 is at very high and anything over 11 is extremely risky for anyone to stay out.

UV radiation levels fluctuate throughout the day, with the highest values occurring during the four-hour period around solar noon. The reported UV Index (UVI) typically reflects this daily peak. Depending on geographic location and the use of daylight saving time, solar noon falls between 12 p.m. and 2 p.m. In some countries, sun protection advisories are issued when UV levels are expected to reach 3 or higher, as exposure at these levels increases the risk of skin damage, making protective measures essential.

What happens to you when you are out in sun for too long?

While sun bathing is good, being out in the sun when the UVI indicates a high or very high risk, may cause you health concerns. It can lead to sunburn, premature skin aging, incresed risk of skin cancer, eye damage and in severe cases, heat related disease.

Sunburn

It is one of the most common skin injury which happens when there is excess exposure to UV radiation from the sun. This happens when the UV radiation directly damages the DNA skin cells. These damaged cells die and shed, this is why people experience peeling after getting a sunburn.

Dehydration

This is also a common occurrence when your body loses too many fluids or electrolytes. It can also interfere with your normal body functions. You may feel dehydrated, especially when you are out in the sun, but not well hydrated. The most common symptoms are dizziness, fatigue and headache on hot days.

Hyponatremia

This is an electrolyte disorder in which your body experiences low sodium in blood. The symptoms could lead to nausea, confusion and even weakness. There are extreme cases when one may have seizures, slip into coma or die.

Heat Exhaustion

This is one of the most common consequence of being out under the hot sun. Dehydration with prolonged heat exposure can lead to heat exhaustion.

Heatstroke

When you are out under the sun and your body's core temperature cross 104°, heatstroke may occur. This is also known as sunstroke. As per the Centers for Disease Control and Prevention (CDC), it causes more than 600 deaths each year in the United States.

While concern continues over the deadly hantavirus outbreak on the MV Hondius cruise ship, reports of more than 100 people falling ill on a Caribbean cruise with vomiting and diarrhea have also sparked alarm.

A cruise ship sailing from Florida with over 3,000 passengers reported a major outbreak around May 7. More than 100 passengers and crew were affected. Health officials confirmed the cause as norovirus.

According to Cruise operator Princess Cruises, enhanced cleaning protocols were introduced immediately after the outbreak was detected. Sick passengers and crew were isolated, and hygiene measures across dining and public areas were intensified.

What Is Norovirus?

Norovirus is a highly contagious virus that causes gastroenteritis, leading to inflammation of the stomach and intestines.

Speaking to HealthandMe, epidemiologist Dr. Amitav Banerjee, professor at DY Patil Vidyapeeth, Pune, described norovirus as “notorious because it spreads very fast.”

“It can spread through fomites like handles and knobs, and even a very low infectious dose—around 18 viral particles—can cause infection. So it spreads very fast,” he said.

He added that while many common disinfectants are ineffective against it, norovirus can be inactivated using bleach and chlorine-based cleaning agents.

Is The Norovirus Outbreak Of Concern?

Although outbreaks can look alarming, Dr. Banerjee emphasized that norovirus infections are generally self-limiting.

“In the ship, it can be managed with oral rehydration, and in severe cases, IV fluids can help prevent complications and mortality,” he said.

A recent report from the US also showed that norovirus can spread very rapidly from person to person on a cruise ship.

Dr. Banerjee also clarified that, unlike diseases with pandemic potential, norovirus outbreaks—while explosive in nature—do not typically pose a long-term global threat.

“So, this particular outbreak is not a cause for worry. It does not have pandemic potential, though it can spread very fast,” he added.

Read More: Hantavirus Alert on MV Hondius: One US Passenger Tests Positive, Two Others Show Symptoms

Who Is Most at Risk? What Are The Key Symptoms

Dr. Banerjee noted that extreme age groups, especially very young infants and the elderly, are at higher risk due to dehydration from diarrheal illness. However, deaths remain rare when proper care is provided.

Norovirus illnesses usually last between two and three days. Symptoms usually begin suddenly within 12 to 48 hours of exposure and may include:

• Nausea
• Vomiting
• Watery diarrhea
• Stomach cramps
• Low-grade fever
• Headache and body aches
• Fatigue

What You Can Do To Stop Its Spread

Because of how fast viruses spread, experts highly recommend preventive actions such as:

• Wash your hands frequently with soap and warm water, especially after using the toilet or before preparing food.
• Avoid visiting hospitals or care homes if experiencing symptoms.
• Stay home for at least 48 hours after symptoms subside to prevent spreading the virus.

Two of 17 American passengers evacuated from the hantavirus-hit MV Hondius have tested positive, the US Department of Health and Human Services (HHS) announced today.

A French national onboard the same cruise has also shown symptoms.

The Dutch-flagged vessel MV Hondius, carrying 94 people, including Filipinos, Britons, Americans, Indians, and Spaniards, arrived in Spain's Canary Islands on May 10. All have been evacuated and repatriated.

How Did Countries Evacuate?

US

The HHS in a post on social media platform X noted that all 17 American citizens have been repatriated from the MV Hondius cruise ship and are currently en route to the US.

The two passengers who tested positive for hantavirus are travelling in the plane's biocontainment units out of an abundance of caution.

“All 17 are currently en route via @StateDept airlift to the United States, with two of the passengers travelling in the plane's biocontainment units out of an abundance of caution. One passenger currently has mild symptoms, and another passenger tested mildly PCR positive for the Andes virus,” the HHS statement said.

The HHS added that the airlifted passengers will be transported “to the ASPR Regional Emerging Special Pathogen Treatment Center (RESPTC) at the University of Nebraska Medical Center/Nebraska Medicine in Omaha, Nebraska”.

The passenger with mild symptoms will be moved to a second RESPTC. Notably, everyone will undergo clinical assessment and receive appropriate care and support based on their condition.

Also read: Hantavirus: How Andes Strain Spreads Between Humans; Why It’s Not Another Pandemic

Spain

Prime Minister of France Sébastien Lecornu, informed that five Spaniards present on the MV Hondius have been repatriated to national territory.

Of these, one “exhibited symptoms on the repatriation flight”.

“As a result, all five passengers were immediately placed in strict isolation until further notice. They are receiving medical care and will undergo testing and a full health assessment,” he added.

Read More: Why The Norovirus Outbreak On A Caribbean Cruise Ship Is Not A Cause for Panic

Australia

Australia said it will charter a flight to evacuate its citizens. And the passengers returning are expected to be quarantined on arrival.

Environment Minister Murray ⁠Watt said the flight carries four Australians, one resident of Tenerife, and one resident of New Zealand.

"This is being done via an Australian government-supported flight, and we expect those people to return to Australia soon," Watt told reporters in Canberra.

"Quarantine arrangements are being finalized as we speak with the states and territories."

India

Two Indian nationals are healthy and unsymptomatic, the Embassy of India in Madrid said on May 10.

They have been medically evacuated to the Netherlands, where they will be quarantined as per relevant health safety protocol, the embassy said.

Planes to Canada, the Netherlands, Turkey, the UK, Ireland, and have also departed from Spain.

WHO Guidelines On Hantavirus

Dr. Maria Van Kerkhove, the WHO’s head of epidemic and pandemic preparedness, said that after being brought to shore, passengers will be kept cordoned off from the public and taken to repatriation flights.

In their home countries, many will be taken onward to isolation facilities. Van Kerkhove said that the WHO is recommending “active monitoring and follow-up” for all passengers and crew for 42 days from their “last point of exposure” to a confirmed case.

"Our recommendation is daily health checks, at home or in a specialized facility. It's up to countries to develop their policies, but our recommendations are very clear," Van Kerkhove said, highlighting that the incubation period for the virus was up to six weeks.

Maryland Governor Wes Moore has urged strengthening investment in maternal health initiatives in the US that will support mothers before and after they give birth.

Speaking to NBC News on the occasion of Mother’s Day on May 10, Moore, along with Arkansas Governor Sarah Huckabee Sanders, spoke about the need to improve access to care for mothers.

Moore, who has served as governor since January 2023, emphasized the need to leverage resources from the government, the private sector, and community organizations to address access gaps.

In light of this, the Maryland Governor highlighted a new partnership his administration entered with The Bridge Project to provide direct cash assistance to new mothers.

The Bridge Project, which has programs in 10 cities, counties, or regions across the country, offers mothers financial support and community resources to assist them during pregnancy and “for the first several years” with their baby.

“It’s going to happen for 150 families in the … areas of Maryland that you’ve had concentrated poverty being a long-term challenge,” said Moore, a father of two.

“And it’s now coming off the heels of additional initiatives that we pulled together, where we’ve reestablished the Governor’s Office for Children. We’ve started something called the ENOUGH Initiative, which is actually an acronym that stands for engaging neighborhoods, organizations, unions, governments, and households, which is the nation’s first place-based, state-led anti-poverty initiative,” he added.

Sanders Urges Bipartisan Action to Improve Maternal Health

Meanwhile, Sanders, who has three children, said she made maternal health a priority after becoming governor, citing Arkansas’ consistently poor ranking in maternal mortality rates.

“If we can see these women and help them and support them from the very beginning of their pregnancy all the way through, then we can help address some of these problems, and we can change maternal health,” Sanders. “Not just in our state, but across the country.”

Read More: Hantavirus: 2 Indian Crew Members On MV Hondius Asymptomatic; How Passengers Were Evacuated?

Sanders said she convened a strategic working group to identify ways to improve maternal health outcomes throughout the state and was “pleasantly shocked by how many people showed up.”

“People that I know actively campaigned against me were some of the most helpful people in developing our strategic plan on how we were going to address this problem in Arkansas,” the governor added. “It is something that breaks down a lot of walls. Everybody knows a mom. Everybody has a mom.”

The working group led Sanders to introduce the Healthy Moms, Healthy Babies Act and other initiatives, including the Proactive Postpartum Call Center run through the University of Arkansas for Medical Sciences, which calls women in their first six weeks postpartum to ask and answer questions about physical and mental health.

Maternal Mortality In The US

Also read: World Thalassemia Day 2026: Why Screening Before Marriage Or Pregnancy Is Important

As per March 2026 data from the Centers for Disease Control and Prevention (CDC), the 2024 figures raise concerns about maternal health in the country. The US has already had one of the highest maternal mortality rates among high-income countries.

The CDC's report stated that in 2024, 649 women died of maternal causes in the United States, compared with 669 in 2023

The maternal mortality rate for 2024, 17.9 deaths per 100,000 live births, shows no significant decline from 18.6 deaths in 2023.