As much of the world moves into a new phase of pandemic-era life, COVID-19 itself continues to change, surprise, and endure. Over the past few weeks, Hong Kong and Singapore—two of Asia's most populous and globally connected cities—have seen a sudden spike in COVID-19 cases. The increase marks not only a local outbreak but a regional wave sweeping across Asia, reminding health authorities and global onlookers that the virus is an active and volatile force.

Hong Kong's Center for Health Protection has reported a significant increase in virus activity. Albert Au, director of the city's Communicable Disease Branch, said that the rate of respiratory samples that test positive for COVID-19 has reached a one-year high. Public health statistics indicated that severe cases, including deaths, have increased to 31 in the week through May 3—also a near-a-year high. Additionally, a troubling increase in COVID-related medical consultations, hospitalizations, and wastewater viral loads suggest widespread community transmission in the city of 7.4 million individuals.

On the other side of the South China Sea, Singapore is also confronted with the same situation. In its initial report of infection rates in almost a year, the health ministry of city-state reported a 28% rise in weekly cases to 14,200 for the week ending May 3. Hospitalization increased by about 30%, and that was the reason why the government issued an unusual public update, something it only usually does during serious outbreaks. In spite of the surge, Singapore's health officials insist there is no indication that the prevailing variants are more contagious or virulent than previous strains. Nevertheless, waning immunity and greater public mobility could be some of the factors.

What's The New COVID-19 Variant Spreading in 2025?

On a global level, the SARS-CoV-2 virus keeps mutating, and although the initial Omicron strain has vanished, its sublineages have taken over. Within the U.S., for example, LP.8.1 is the variant that today represents 70% of cases, followed by XFC (9%) and XEC (6%). Other Omicron descendant strains such as MC.1.10.1, LB.1.3.1, and LF.7 are also present.

It's worth noting that standard COVID-19 tests will not detect variants. Genomic sequencing alone can identify what particular strain caused a case of infection. These points of data are invaluable for surveillance by public health but are generally not shared at the individual level.

What makes this recent wave so significant is its timing. Historically, respiratory viruses have seasonality—spiking during colder seasons. But COVID-19 just won't follow that trend. The latest increase occurs as the Northern Hemisphere heads into summer, further solidifying COVID-19's transformation into an endemic virus with unpredictable seasonality. Health professionals warn that we can still expect waves of illness regardless of weather conditions.

Hong Kong and Singapore are not the only cities experiencing such a rebound. In mainland China, statistics from the Chinese Center for Disease Control and Prevention indicate that the nation is well on its way to achieving COVID levels comparable to last summer's peak. The hospital patient positivity rate more than doubled over a five-week period through May 4, a measure of widespread transmission.

Thailand, another tourist and cultural destination, has witnessed increases as well. Two cluster outbreaks have been identified in 2025, with a significant surge after the traditional Songkran festival in April, which attracts record crowds and travel.

Guidelines for Global Travel and Public Health

Although the current wave is less lethal than previous stages of the pandemic, it is a stark reminder that COVID-19 is far from being finished. Global air travel hubs such as Hong Kong and Singapore are gateways to the region and the world. An increase in cases there might presage more spread in other nations, especially once travel picks up again for summer vacations.

Concert cancellations—such as those of Hong Kong pop star Eason Chan in Taiwan—indicate the virus's disruptive power still exists. While hospitalizations have yet to achieve crisis levels, the strain on health systems and the economy is genuine and escalating.

How to Stay Protected And Vigilant?

As infections increase in various regions of Asia, public health officials are cautioning against complacency. Populations are strongly encouraged to stay vigilant. Booster shots are particularly recommended for high-risk individuals. Fundamental protective practices do not change: have good hand hygiene, host events outdoors, wear masks where public places are crowded, and stay home when you are unwell.

In the U.S., emergency room visits due to COVID decreased 19.5% during the latest reporting week, test positivity remained at 2.9%—below the 5% benchmark for uncontrolled community spread. Yet because most use at-home tests or don't test at all, official tallies probably underestimate actual prevalence.

The current COVID-19 wave sweeping across Hong Kong, Singapore, and the rest of Asia reminds us of a grim reality: the virus remains with us, even though our lives have mostly moved on. Although vaccines, better treatments, and public health interventions continue to offer robust protection, the virus's ability to surprise is still there. The world must keep evolving and responding to new waves, variants, and challenges in an ever-changing pandemic environment.

As the world begins to reopen and the danger recedes from view, it's obvious that COVID-19 has not left the stage—it's just changed costume.

Ontario is currently facing an outbreak of canine parvovirus (CPV), which has led to spikes in online searches on more information on the dog disease.

Expert Tracy Fisher, a veterinarian from Regina and the president-elect of the Canadian Veterinary Medical Association, told CTVNews.ca that the frequency of cases varies every year. The expert has also commented that the prominence of CPV in Canada is common and persistent. The outbreak had made headlines earlier this summer in London too.

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What is Canine Parvovirus?

PetMD notes that CPV is the most serious virus that dogs and puppies can get. However, the silver lining here is that it is preventable with proper vaccination, though it is still widely prevalent, especially in puppies and poorly vaccinated adolescent dogs.

DVM Ellen Malmanger writes that CPV is an infectious DNA virus that commonly causes severe illness in young and unvaccinated dogs. It also affects the body's rapidly dividing cells. This means the intestinal tract and bone marrow are usually the most affected.

As per the Veterinary Centers of America (VCA)'s Canadian division, CPV first appeared in dogs in 1978. “The virus that causes this disease is similar to feline panleukopenia (feline distemper); the two diseases are almost identical,” the website for VCA Canada, a network of animal hospitals, says. “However, that has never been scientifically proven.”

VCA Canada notes that primary source of infection is through the ingestion of the feces of already-infected dogs. It can be easily transmitted through contact with the hair or feet of infected dogs or with objects contaminated by the infected feces.

According to VCA Canada, the virus initially targets the animal's tonsils or lymph nodes, where it infects lymphocytes—a type of white blood cell. These infected cells then spread the virus throughout the body, reaching areas such as the bone marrow and the intestinal lining.

Can You Touch A Dog With Parvo?

Humans cannot get parvo from dogs. Parvovirus is species-specific and so the strain that affects dogs, known as CPV cannot infect humans. However, humans can contact similar virus from contaminated surfaces, such as Norovirus, but there is no risk of acquiring parvo from dogs.

What Is Human Parvovirus?

The human parvovirus is different, and is caused by the B19 strain. It was first discovered in 1974 during evaluation and testing for hepatitis B, and was later named by the International Committee on Taxonomy of Viruses in 1985.

Parvovirus B19 is a common and often overlooked infection that spreads from person to person. While it’s not widely talked about, it’s more widespread than most people think — in fact, nearly half of all adults in the U.S. have had it at some point in their lives.

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What makes it tricky to spot is that most people don’t even realize they’ve been infected. The virus rarely causes symptoms, and when it does, they tend to be mild. It’s usually only people with weakened immune systems — where the body’s natural defense isn’t working as it should — who may experience more noticeable effects. That’s because parvovirus B19 can temporarily interfere with the body’s ability to make red blood cells.

Anyone can catch the virus, regardless of age or ethnicity. But those most at risk include individuals with immune system issues or conditions that affect red blood cell production. Children are also more likely to get infected, but in most cases, they don’t show any symptoms. If symptoms do appear, they’re generally mild and manageable.

London is currently dealing with a serious lung sickness called Legionnaires' disease. So far, one person has died, and more than 40 people have gotten sick in just the past week. The Middlesex-London Health Unit has announced this as an outbreak.

The Health Unit UK is working closely with provincial health groups to find out where this sickness started. This involves taking samples from different cooling systems, which can take some time. Officials know people are eager to find the source, and they are too, but they don't have an exact location yet. Teams are busy collecting water samples and swabs from cooling systems. They'll then compare these to samples from the sick people, hoping to find a common source.

Normally, only a few cases of Legionella, the bacteria that causes the disease, are reported each month. However, the number suddenly jumped to 43 new cases, which is why the outbreak was declared. Health officials think the recent warm weather probably played a role in this increase, as the number of cases was much higher than what they usually see at this time of year.

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What is Legionnaires' Disease?

The National Health Services UK explains that Legionnaires' disease is caused by tiny bugs called Legionella bacteria. These bugs are naturally found in water sources like hot tubs, cooling towers, hot water tanks, large pipes, and parts of air conditioning systems.

It's important to understand that this sickness does not spread from person to person. People get sick when they breathe in tiny drops of water or mist that contain these bacteria. Most people who are exposed to the bacteria don't get sick, but some might get a milder, flu-like illness called Pontiac fever.

Legionnaires Outbreak: Where Is This Bacteria Found?

Legionella bacteria are naturally found in water sources like hot tubs, cooling towers, hot water tanks, large plumbing systems, and parts of air-conditioning systems. People get sick if these bacteria become airborne as mist (from wind or fans) and are then inhaled.

Most people exposed to Legionella don't get sick, though some might get a milder, flu-like illness called Pontiac Fever, which usually goes away on its own. People who are older, have lung problems, or have weaker immune systems are at a higher risk of getting a serious infection. It's important to remember that Legionella does not spread from person to person.

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Legionnaires Outbreak: Important Health Guidelines to Follow

If you develop symptoms like fever, cough, or shortness of breath, you should seek medical attention right away.

The Health Unit asks all business owners and property managers to make sure their cooling equipment is regularly maintained and cleaned according to the manufacturer's instructions. This is the best way to prevent future outbreaks. The Middlesex-London Health Unit also listed some commonly asked questions regarding the disease,

Legionnaires Outbreak: Will Masks Help?

While face masks can reduce your risk of getting respiratory illnesses, including Legionella, the general public's risk for Legionnaires' disease is currently low. Because of this, the Health Unit is not recommending widespread community masks to use specifically to prevent this disease.

Legionella bacteria can spread over a large area through the air. The exact source of this current outbreak hasn't been found yet. At this time, it's not known if this outbreak is from the same location as last year's Legionella outbreak. However, this possibility is being considered as part of the ongoing investigation.

Weld County officials announced on July 7 that mosquito samples collected from two of the county’s three designated trap zones have tested positive for West Nile Virus (WNV). The affected areas include Greeley, Evans, Kersey, and LaSalle (Zone One), as well as Johnstown, Milliken, and Platteville (Zone Two).

Mosquitoes from the third trap zone—covering Firestone, Dacono, and Fort Lupton—tested negative for the virus.

Though no human cases have been reported in the county so far this year, health officials are warning residents to be prepared. With the arrival of hotter temperatures in July and August, Culex mosquitoes—the primary carriers of WNV—become more active and more numerous.

“A Permanent Summer Presence”

Jason Chessher, Executive Director of the Weld County Health Department, emphasized the seasonal nature of the virus. “The increasing hot weather often leads to favorable conditions for the Culex mosquito that carries West Nile Virus,” he said. “The public needs to be vigilant, because West Nile Virus has a permanent summer presence in Colorado.”

What Are The Risks?

Most people infected with WNV do not show symptoms, but those who do may begin to feel unwell three to 14 days after being bitten by an infected mosquito. Common symptoms include fever, headache, muscle aches, nausea, vomiting, weakness, and sometimes a rash.

While these symptoms may resemble the flu, WNV can lead to more serious complications in some cases, particularly among older adults and those with weakened immune systems. There is currently no vaccine or specific antiviral treatment for WNV, which makes prevention especially important. Weld County health authorities recommend seeking medical care promptly if any symptoms arise.

Steps to Stay Safe

Health experts advise residents to take proactive steps to reduce the risk of mosquito bites and virus transmission. These include:

• Eliminate standing water around your home, such as in birdbaths, flower pots, gutters, or pet bowls, as these are prime mosquito breeding grounds.

• Use insect repellent that contains DEET, picaridin, oil of lemon eucalyptus, IR3535, or para-menthane-diol.

• Avoid outdoor activity during dawn and dusk, when mosquitoes are most active.

• Wear protective clothing like long-sleeved shirts and pants if you are outside during these peak hours.

Cases In The Past and Present

Colorado saw a significant spike in WNV cases in 2023, recording 631 infections, 398 hospitalizations, and 51 deaths—the highest in the country that year. In contrast, 2024 has been comparatively mild, with just 76 reported cases statewide, 24 hospitalizations, and no fatalities to date.

Still, with Culex mosquito populations on the rise, officials say it’s crucial not to let your guard down. Weld County will continue monitoring mosquito activity closely and urges the community to follow safety guidelines to help prevent the spread of West Nile Virus this summer.