Heavy Rains and Hurricanes Clear a Path for Supercharged Mold

Anyone east of the Rockies will tell you this has been a wet year. It wasn’t just that Hurricanes Florence and Michael soaked parts of the South. It wasn’t just that this year’s drenching storms were numerous and tracked unusually far north (one, Alberto, made a historic appearance all the way up in Michigan).

It was also that the rest of the Eastern Seaboard just simply got wetter. In Wilmington, N.C., 60 inches of rain broke an annual record set in 1966. Around Scranton, Pa., rainfall broke a 1945 record. Wisconsin, Colorado and Maryland all saw 1-in-1,000-year rainfall events. And dozens of locations, like Baltimore, Pittsburgh and Charleston, W.Va., had their second- or third-wettest summers on record.

And with the rain comes mold.

In some houses, mold spores are nothing more than a nuisance—staining furniture or making the basement smell funny. But in other homes they can put people in the hospital or even kill them. Many molds are associated with allergy or asthma attacks; some have been linked to serious complications in immune-compromised populations, and cancer. It is hard to say just yet how much the latest wet year has affected people’s respiratory systems, but it is certainly already hitting their pocketbooks.

“This year there’s just a lot of mold tests being done,” says Michael Berg, the laboratory director for EMLab P&K, one of the biggest U.S. mold-testing companies. He says staffing has become a challenge after two hurricanes and relentless storms along the Eastern Seaboard: “We are struggling, as far as having enough hands on deck in a year like this.”

As climate change and CO2 emissions continue to shape life on Earth, we may be seeing a lot more flooding—with higher sea levels and more powerful storms. In some ways this year might be a glimpse into a wet and moldy future. But what will that mean in practical terms?

Modelling the effects of climate change and rising CO2 levels is notoriously difficult, and even more so when it comes to the diverse world of fungi. It is a little like asking, “How will climate change affect animals?”—some may benefit while others suffer. In some cases the heat will make for fertile breeding grounds for fungi. In others the additional CO2 might irritate them, thereby prompting them to release more spores. “It’s a stress response. The fungus wants to survive, and the way it tries to survive is to produce more offspring—and that means more spores,” says Naresh Magan, a mycologist at England’s Cranfield University. Aspergillus fumigatus, a member of what is perhaps the most common genus of mold to irritate humans, seems to release far more spores when scientists raise it in warmer, CO2-rich enclosures. Other researchers have suggested that increased CO2 might create more leaf litter—where a lot of mold grows when it is not in your house—adding much-needed nitrogen for fungi.

And the spores they produce might be more harmful. In addition to the number of spores a mold puts out, evidence suggests higher CO2 might change the spores themselves. Some mold spores are more than eight times more allergenic today than in pre-industrial times (though it is not clear this trend will be maintained as CO2 levels continue to rise).

Scientists are not completely certain as to how this works. Unlike plants—which breathe in CO2 and can benefit from its increase—fungi take in oxygen, so changes in the chemistry of their spores may be due to some kind of secondary effect. Experts have suggested that more CO2 can lead to more acidic soil or indirectly change fungi respiration. Or there might be some unknown mechanism that causes different responses in different molds. Whatever that mechanism might be, higher CO2 somehow triggers the more allergenic proteins in many molds—which may be why so many more people are allergic to mold today than in generations past.

But not all fungi react the same way to environmental changes. Experiments suggest Alternaria—a genus of mold that causes respiratory problems and is often found in spoiled crops and houses—may actually decrease the allergens in its spores in a warmer, higher-CO2 world. In many cases, it is not clear what chemicals cause adverse health effects from mold spores, let alone how they will respond to a changing climate and atmosphere.

Magan has exposed many types of mold to different levels of CO2, heat and moisture. He says molds such as Stachybotrys—a dangerous group often referred to as “black mold”—might become less allergenic as CO2 increases. But when Aspergillus species are put in a higher CO2 environment, they increase production of aflatoxin B1, a potent cancer-causing chemical that the mold can deposit on some types of produce and livestock feed.

Some of these effects will change, Magan says, as molds adapt and mutate. This might mean the molds will adjust to the stress of climate change—but it could also mean they will adjust to how we treat them. The human body is an excellent place for molds to grow, but most people’s bodies are able to fight them off (though we might start coughing or get runny noses in the process). But in people with compromised immune systems—after stem cell therapy or an organ transplant, for example—Aspergillus can be lethal. Studies have documented an increasing ability among such molds to resist medical treatments including triazole, the most potent anti-fungal in such cases, even in patients who have never taken the drug.

Another problem with mold today is that many energy-efficient homes are designed to capture and conserve heat—which means they can also trap moisture and prevent ventilation, Magan adds. Heat and moisture create a perfect environment for mold. In a bitter irony, architects battling the very things that encourage molds globally may be making them more comfortable in your basement.

But people living in modern, energy-efficient homes are not the ones likely to suffer most from the long-term effects of mold. As is often the case with climate change and rising CO2 levels, the repercussions will likely be worst among the poor, especially in underdeveloped economies where many people cannot purge moisture and mold from their houses.

“With asthma and chronic pulmonary disease, it’s a vicious cycle. [Patients] go and get medication and they feel a little bit better, but they come back into the same home environment,” says Maureen Lichtveld, a global health professor at Tulane University who works with marginalized communities in the Caribbean region as well as the U.S. Southeast.

Lichtveld studies many forms of disease that follow disaster and climate change, but she finds mold especially frustrating because it is highly preventable and relatively easy to control in the home. And if it is not removed, mold can exacerbate chronic asthma and other diseases and stunt a child’s learning and growth. In Puerto Rico asthma was already 23 percent higher than on the mainland—with twice as many asthma-related deaths—before Hurricanes Irma and Maria battered the island in 2017. Many reports suggest it has spiked since then, though objective numbers are not yet available.

In places such as South Florida, where seasonal flooding is common, the mold remediation business has become especially competitive, according to Berg. In other places hit by hurricanes or heavy rains, residents might be facing mold problems for the first time. But whether from flooding, increased spore output or changes in how it functions, mold is likely to become a bigger part of our lives.

Tips* for avoiding the effects of airborne mold spores:

  • Just because you can’t smell the musty odor of mold in the air doesn’t mean it is not there. But if you can, it’s a good sign you might have a problem.
  • As with other allergens, not everyone responds to mold spores in the same way. One person might sneeze or cough while another might become exhausted, and another will feel nothing at all.
  • Mold thrives in wet places with little ventilation. Be especially careful with showers, basements or wherever you hang your clothes to dry.
  • There are thousands of species of mold, and each species releases different concentrations of potentially harmful chemicals. Off-the-shelf mold detectors are generally not sophisticated enough to accurately measure dangerous molds. It is far better to hire a service to take samples and analyze them in a lab.
  • For people with asthma, mold spores become especially dangerous when combined with other allergens such as cockroaches or animal dander.
  • Whereas molds can become resistant to medicines, they cannot do so to household bleach—which is still the best way to get them off surfaces. White vinegar is another, less caustic, option.
  • One of the best ways to beat mold in the home is to keep humidity low (ideally below 50 percent, but at least below 80 percent). If you have a period of high humidity, keep an eye out for mold.
  • Mold is far more likely to grow on organic materials. Wicker, wood or straw on furniture are the most common.
  • Make sure rooms are well-ventilated. If the weather is dry, open a window and create a cross breeze. If not, switch on a fan or air conditioning.
  • Do not try to paint over mold. It will continue to grow and release spores underneath the paint. Always wear protective goggles and a mask when dealing with household mold.
  • Once you have removed the mold—washing with bleach, throwing out that old wicker chair, using an air filter—the mold should not come back. If it does, it is probably because moisture is continuing to seep in through the air or some kind of leak. Find the source of the moisture rather than endlessly fighting the mold.

Original Article Source:https://www.scientificamerican.com/article/heavy-rains-and-hurricanes-clear-a-path-for-supercharged-mold/

NIOSH Develops Tools to Help Identify and Assess Areas of Dampness and Mold

NIOSH has developed and released the Dampness and Mold Assessment Tool to help employers identify and assess areas of dampness in both general buildings and school buildings.

“Implementing regular visual inspections for dampness can help to identify trouble areas before they become major problems and help to prioritize maintenance and repair,” said David Weissman, M.D., director of NIOSH’s Respiratory Health Division. “The Dampness and Mold Assessment Tools provide an inexpensive mechanism to investigate, record, and compare conditions over time.”

Close-up Photo of Tree Bark

Nonindustrial buildings like offices and schools can develop moisture and dampness problems from roofs and window leaks, high indoor humidity, and flooding events, among other factors. Dampness can promote the growth of mold, bacteria, fungi, and insects. Workers and others in damp buildings can be exposed to airborne pollutants from biological contaminants and the breakdown of building materials.

According to NIOSH, research has shown that exposure to building dampness and mold are associated with a number of health problems, including:

  • Respiratory symptoms (such as in the nose, throat, or lungs)
  • Development or worsening of asthma
  • Hypersensitivity pneumonitis (a rare lung disease in which lungs become inflamed as an allergic reaction to inhaled bacteria, fungi, organic dusts, and chemicals)
  • Respiratory infections
  • Allergic rhinitis (often called “hay fever”)
  • Bronchitis
  • Eczema

The Dampness and Mold Assessment Tools provide a guide for users to assess all rooms for areas of dampness and mold and identifying the source(s) of the dampness and mold. The tools include a checklist and instructions for assessing and recording any damage found and for tracking conditions over time.

Workers who suspect their health problems are related to exposure to building-related dampness or mold should report new, persistent, or worsening symptoms to their personal doctor and to a designated individual at their workplace per their employer.

Article Source  https://ohsonline.com/articles/2018/12/18/niosh-develops-tools-to-help-identify-and-assess-areas-of-dampness-and-mold.aspx?m=1

Colder weather highlights importance of indoor air quality

When most people think of “air quality,” they think of the outdoors; the smog, haze, even pollen.

But what many people don’t realize is that factors inside the home can also lead to poor air quality, causing potentially serious health risks.

10TV found out why indoor air quality tends to become more of an issue when the temperature drops.

What it really comes down to, according to Alisha Hopkins, a certified nurse practitioner with the Breathing Association, is the simple fact that when it gets colder outside, people tend to stay in their homes for longer periods at a time.

That means more exposure to all the particles, molds and bacteria inside the home.

“Your home is your safe harbor and then all of a sudden, now, it’s this area of just triggers everywhere,” Hopkins said. “So no matter where you go there’s a trigger. …We always think of the outside but we forget that our home is one of the places that we literally lay our heads down, we relax in, and if you’re relaxing in a bunch of dirt, relaxing in pet dander, the fur, that too will make our breathing that much worse.

One woman told 10TV she notices a difference in her breathing as soon as the holiday decorations come out.

“I just start to get the stuffy nose, the watery eyes and then my asthma really kicks up,” said Cindy Groeniger, vice chair for the American Lung Association local leadership board.

Groeniger has suffered from asthma since she was just 10 months old, she said.

“Every fall season it’s bad because I decorate and then you have, you know, mold or dust maybe on your decorations so I have to watch that,” Groeniger said. “Sometimes I have to increase my medicine for the holidays.”

Tips for improving indoor air quality can be simple, Hopkins said.

  • Vacuum your mattresses, carpet, couches and chairs inside to get ride of dirt, particles and pet dander that could build up over the year.
  • Groom pets heading into the colder months. Many pets tend to shed more in the fall but grooming them can decrease the amount of pet dander in the air.
  • Use air filters and humidifiers, making sure to clean them out regularly to avoid mildew and mold buildup.
  • Wipe down handles, door knobs and surfaces, keeping them free of germs. Because people tend to stay inside more through the winter, illnesses can spread easier from person to person.
  • Replace furnace filters before cranking up the heat.

Fall is also a good time to make sure that furnaces are carbon monoxide-free, Hopkins said that. Double check carbon monoxide detectors in the home to make sure they are working properly.

For more information on indoor air quality, click here.

Article Source:www.10tv.com/article/colder-weather-highlights-importance-indoor-air-quality

Previous photo credit: https://precondo.ca/

University Focuses On Cleaning After Student Death Linked To Mold

Dorms are being deep cleaned at the University of Maryland, as students are growing increasingly concerned that mold problems may be linked to the death of a freshman. According to Fox News reporting, Olivia Paregol, 18, died from the same rare virus that killed 11 children in a New Jersey healthcare facility.

Paregol developed a cough, which later worsened to pneumonia. She died from adenovirus on Nov. 18 at Johns Hopkins Hospital. This is less than three weeks after the school learned she had the illness. The university has since said five more students have illnesses tied to the same rare virus.

Some students said they found mold on their shoes and clothes in their dorm back in August — and believes the fungus caused them to fall ill. After they repeatedly alerted university officials, about 500 students were moved to temporary housing while the school worked to clean the dorms.

Paregol – who suffered from Crohn’s disease and a weakened immune system – lived in Elkton Hall, one of the dorms evacuated for cleaning.

Dr. David McBride, head of the university’s campus health center, said the university has stepped up the cleaning efforts and is on high alert.

Earlier this year these same dorms were involved in a study that looked at how influenza spread in close quarters.

Article Source:https://www.cleanlink.com/news/article/University-Focuses-On-Cleaning-After-Student-Death-Linked-To-Mold–23275

Mold After A Disaster

Highlights

  • People with asthma, allergies, or other breathing conditions may be more sensitive to mold.
  • If you or your family members have health problems after exposure to mold, contact your doctor or other health care provider.
  • Controlling moisture in your home is the most critical factor for preventing mold growth.
  • If you plan to be inside the building for a while or you plan to clean up mold, you should buy N95 masks (or a respirator with a higher protection level) at your local home supply store and wear one while in the building. Make certain that you follow instructions on the package for fitting the mask tightly to your face. Even if you go back into the building for a short time and are not cleaning up mold, you need to wear an N95 mask.

After natural disasters such as hurricanes, tornadoes, and floods, excess moisture and standing water contribute to the growth of mold in homes and other buildings. When returning to a home that has been flooded, be aware that mold may be present and may be a health risk for your family.

People at Greatest Risk from Mold

  • People with asthma, allergies, or other breathing conditions may be more sensitive to mold.
  • People with immune suppression (such as people with HIV infection, cancer patients taking chemotherapy, and people who have received an organ transplant) are more susceptible to mold infections. People with a weakened immune system, especially people receiving treatment for cancer, people who have had an organ or stem cell transplant, and people taking medicines that suppress the immune system, should avoid cleaning up mold. Children should not take part in disaster cleanup work.

Possible Health Effects of Mold Exposure

People who are sensitive to mold may experience stuffy nose, irritated eyes, wheezing, or skin irritation. People allergic to mold may have difficulty in breathing and shortness of breath. People with weakened immune systems and with chronic lung diseases, such as obstructive lung disease, may develop mold infections in their lungs. If you or your family members have health problems after exposure to mold, contact your doctor or other health care provider.

Safely Preventing Mold Growth

Clean up and dry out the building quickly (within 24 to 48 hours). Open doors and windows. Use fans to dry out the building. Position fans to blow air out doors or windows.

See the fact sheet for drying out your house, Reentering Your Flooded Home and the Homeowner’s and Renter’s Guide to Mold Cleanup After Disasters.

  • When in doubt, take it out! Remove all porous items that have been wet for more than 48 hours and that cannot be thoroughly cleaned and dried. These items can remain a source of mold growth and should be removed from the home. Porous, noncleanable items include carpeting and carpet padding, upholstery, wallpaper, drywall, floor and ceiling tiles, insulation material, some clothing, leather, paper, wood, and food. Removal and cleaning are important because even dead mold may cause allergic reactions in some people.
  • To prevent mold growth, clean wet items and surfaces with detergent and water.
  • Homeowners may want to temporarily store items outside of the home until insurance claims can be filed. See recommendations by the Federal Emergency Management Agency (FEMA).
  • If you wish to disinfect, refer to the U.S. Environmental Protection Agency (EPA) document, A Brief Guide to Mold and Moisture in Your Home[1.4 MB, 20 Pages].

If there is mold growth in your home, you should clean up the mold and fix any water problem, such as leaks in roofs, walls, or plumbing. Controlling moisture in your home is the most critical factor for preventing mold growth.

To remove mold growth from hard surfaces use commercial products, soap and water, or a bleach solution of no more than 1 cup of household laundry bleach in 1 gallon of water. Follow the manufacturers’ instructions for use (see product label). Use a stiff brush on rough surface materials such as concrete.

If you choose to use bleach to remove mold:

  • Never mix bleach with ammonia or other household cleaners. Mixing bleach with ammonia or other cleaning products will produce dangerous, toxic fumes
  • Open windows and doors to provide fresh air. Use fans to dry out the building. Position fans to blow air out doors or windows.
  • Wear non-porous gloves and protective eye wear.
  • If the area to be cleaned is more than 10 square feet, consult the U.S. Environmental Protection Agency (EPA) guide titled Mold Remediation in Schools and Commercial Buildings. Also available is A Brief Guide to Mold, Moisture, and Your Home.[1.4 MB, 20 Pages]
  • Always follow the manufacturer’s instructions when using bleach or any other cleaning product.
  • For more information on personal safety while cleaning up after a natural disaster, see Response Worker Health and Safety.

If you plan to be inside the building for a while or you plan to clean up mold, you should buy N95 masks (or respirators with a higher protection level) at your local home supply store and wear one while in the building. Make certain that you follow instructions on the package for fitting the mask tightly to your face. Even if you go back into the building for a short time and are not cleaning up mold, you still need to wear an N95 mask.”

Original Article Source: https://www.cdc.gov/disasters/mold/index.html

Health Risks Associated with Smoke, Soot, and Mold

House fires are terrifying because the flames can cause intense bodily harm that results in serious injury and even death.  Once the fire is put out, many homeowners are relieved in the sense that the threat to their life or health has ended.  However, the flames themselves are not the only potential source of health issues.  Many of the byproducts of a fire are toxic.  Fires leave behind smoke, soot, corrosive byproducts, and even mold that negatively affects your health.  It is important to know the health risks caused by the byproducts of a fire to keep yourself and your family safe in the aftermath.

Smoke

All fires involve smoke and everyone knows that smoke inhalation is extremely dangerous because of the chemicals it contains.  Smoke is the byproduct of incomplete combustion and contains the following toxins:

  • Carbon Monoxide (CO) and Hydrogen Cyanide (HCN): The potential health effects of carbon monoxide are well known as many homes have carbon monoxide detectors for safety. Less people know about the risks of the other major chemical in smoke, hydrogen cyanide.  Hydrogen cyanide is over 30 times more toxic than carbon monoxide and inhaling a combination of both can be deadly.  Smoke inhalation is the leading cause of fire related deaths.
  • Chemicals from Burnt Materials: When materials such as wood, drywall, and flooring are burned in a fire, they release hundreds of chemicals in the smoke that are harmful to your health. Some of the dangerous chemicals released by burning household materials include hydrogen sulfide, hydrogen chloride, carboxylic acids, nitrogen oxides, acid gases, sulfur dioxide, and much more.

Soot

After the fire and smoke have cleared, there is still a substance present that can spread throughout the home and cause health issues as well as property damage; soot.  Soot is dangerous because it spreads and settles everywhere including the air ducts where it can get redistributed into the air.  Most health problems caused by soot result from inhalation but soot can also get absorbed in the skin and eyes.  The main health effects from soot include lung irritation and respiratory issues such as bronchitis and asthma as well as more serious issues including heart attack, stroke, and even cancer.

Mold

Few people associate mold growth with house fires but if a house fire is extinguished with water, this excess moisture can quickly lead to mold growth.  Moisture is the main cause of mold growth and organic materials that are wet from putting out the fire can become contaminated with mold within 48 hours.  Mold not only adds to the health risks already present after a fire, but also causes even more property damage that makes the restoration process longer and more expensive.

If a fire breaks out in your home, make sure that everyone evacuates safely and do not return to your home until it has been restored and deemed safe.  The byproducts of a fire are just as dangerous as the fire itself and can cause serious health effects long after the fire has been put out.  It is of extreme importance to begin the fire damage restoration as soon as possible by hiring professionals that can safely remove dangerous byproducts from soot and smoke.  These professionals have effective cleaning products and personal protective equipment to keep themselves safe during the restoration process

 

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Expert in emergency fire and water restoration services, fire cleanup and water damage cleanup, mold removal, as well as carpet and upholstery cleaning services. Contributor to several restoration and cleaning blogs.