BK. Titanji

Rapid test can detect flu A and B. They are not perfect

In the clinical trials involving tens of thousands of people and now billions of doses globally, there has been no evidence that COVID vaccines cause ADE. In fact, vaccinated people consistently have lower rates of severe disease, which is the opposite of what ADE would produce.

ADE has been seen with infections like dengue, which is why vaccine developers actively look for it when designing new vaccines. For COVID vaccines, ADE was something scientists looked for very carefully from the beginning bcos it had been a concern in some early coronavirus animal studies yrs ago.

Antibody-dependent enhancement (ADE) is a real immunologic phenomenon, but it’s very rare and very specific to certain viruses and vaccine designs. It happens when antibodies bind a virus but fail to neutralize it, potentially helping the virus enter cells.

It’s also important to remember that many respiratory viruses cause “flu-like” symptoms, and most aren’t routinely tested for outside hospitals. Common culprits in the U.S. include rhinoviruses, adenoviruses, parainfluenza viruses, human metapneumovirus, and the seasonal coronaviruses

Rapid flu tests used in many urgent care clinics are helpful but not perfect. The quick antigen tests can miss infections, particularly early in illness or if the viral load is low, so false negatives do happen.

Because measles is one of the most contagious viruses we know, the threshold for herd immunity is very high. Epidemiologic models estimate that about 92–95% of the population needs to be immune (through vaccination or prior infection) to prevent sustained transmission.

Change it if it becomes wet, dirty, or hard to breathe through.
Otherwise, for a single long flight, one mask is usually fine, but many people bring 1–2 spares.

For maximum protection on a plane, the best option is a tight-fitting respirator such as an N95. These are designed to seal closely to the face and filter ≥95% of airborne particles, making them more protective than surgical or cloth masks.

It depends. Cases that require hospitalization are often severe or with complications. Length of stay will vary on the host and their presentation so impossible to provide an arbitrary range. The vaccines prevent measles. That's the surest way to not needing hospitalization for it to begin with.

This bacterial infection spreads through water contaminated with animal urine, and flooding increases exposure risk. Symptoms can start with fever, headache, muscle aches, and sometimes jaundice or kidney problems.

These are still relatively uncommon overall, but they do appear periodically in southern states. That said, if someone becomes ill after working around floodwater, the first infection many clinicians think about isn’t mosquito-borne at all it’s leptospirosis.

Mosquito-borne illnesses are important to keep in mind in the southern U.S., especially after flooding when mosquito populations surge. The main ones clinicians think about are West Nile virus (by far the most common), dengue, and occasionally eastern equine encephalitis (EEE).

So even if someone never had natural chickenpox and only received the vaccine, shingles vaccination later in life is still recommended to reduce that risk.

which can remain dormant in nerve cells just like the wild virus. That means it is possible though less common for someone vaccinated against chickenpox to develop shingles later in life. Shingrix is designed to boost immunity against varicella-zoster reactivation, which is what causes shingles.

Yes. Current guidance is that adults age 50 and older should receive the shingles vaccine (Shingrix) regardless of whether they had chickenpox in the past or received the chickenpox vaccine. The reason is that the chickenpox vaccine uses a live, weakened form of varicella-zoster virus,

Infection also doesn’t occur from the bite itself but when parasite-containing bug feces contaminate the bite site, which makes transmission less efficient.

One reason transmission is lower here is ecology. In Latin America the bugs often live inside homes and feed repeatedly on humans, while U.S. species tend to live outdoors.

However, locally acquired human infections in the U.S. are still rare. Most of the ~280,000 people living with Chagas disease in the U.S. were infected earlier in life in Latin America, where the disease is much more common.

"Kissing bugs” (triatomine bugs) that can carry the parasite Trypanosoma cruzi, which causes Chagas disease, do exist in the U.S. and have been found across much of the southern half of the country. They’ve actually been here for a long time, and some of them do carry the parasite.

But when the full panel is used and interpreted together, the likelihood that a “past EBV infection” result is falsely positive is quite low.

Where confusion sometimes happens is when only one marker is tested, or when there is cross-reactivity with other infections or autoimmune antibodies, which can occasionally produce misleading results.

A pattern showing VCA IgG and EBNA IgG positive generally indicates past infection, and that interpretation is considered fairly reliable. Since over 90% of adults worldwide have been infected with EBV, a positive “past infection” result is actually the expected finding for most people.

Yes false positives can occur, but they’re uncommon when the full EBV antibody pattern is interpreted correctly. EBV testing usually looks at several antibodies together (for example VCA IgM, VCA IgG, and EBNA IgG).

Public health agencies therefore recommend meningococcal vaccination in adults based on risk, not age alone. Adults over 55 can still receive meningococcal vaccines if they have certain risk factors (for example: complement deficiency, asplenia etc.)

Because people over 55 were not widely included in the clinical trials, the manufacturers only sought regulatory approval for the age ranges where they had strong data. That means some product labels stop at age 55 even though the biology of the vaccine doesn’t suddenly change at that birthday.

It’s mostly about how the vaccines were studied and licensed, not because the vaccine would necessarily be harmful after age 55.
Most meningococcal vaccines were originally tested and approved for specific age groups where the disease risk is highest infants, adolescents, and young adults.

The trajectory can vary widely, but the goal is to keep inflammation controlled and maintain normal breathing, whether the condition ultimately proves persistent or improves.

Given your history of multiple sclerosis and possible post-viral triggers, it’s worth continuing follow-up with your clinician to monitor lung function and symptoms over time.

Adult-onset asthma can happen for several reasons sometimes after a resp infection, sometimes related to allergies or airway inflammation, & sometimes as part of broader immune dysregulation. In many people it becomes a chronic condition, but the severity can fluctuate a lot over time.