Infections / 12.05.2026

MedicalResearch.com Interview with: Daniel Pastula MD, MHS Professor of Neurology, Medicine (Infectious Diseases), and Epidemiology University of Colorado School of Medicine & Colorado School of Public Health Daniel Pastula MD, MHS Professor of Neurology, Medicine (Infectious Diseases), and Epidemiology University of Colorado School of Medicine & Colorado School of Public Health Hantavirus infections have drawn renewed attention following recent outbreak reports.  Dr. Pastula explains that hantavirus is not a single disease but a family of viruses with distinct characteristics depending on geographic region and rodent host — and that mortality rates can approach 40% in the most severe form found in the Americas.
Author Interviews, Infections, Pediatrics, Vaccine Studies / 12.02.2026

MedicalResearch.com Interview with:
[caption id="attachment_72376" align="alignleft" width="190"]MedicalResearch.com Interview with: William Schaffner, MD Professor of Preventive Medicine, Department of Health Policy Professor of Medicine, Division of Infectious Diseases Vanderbilt University Medical Center Nashville, TN 37203 Dr. Schaffner discusses the recent increase in the incidence of measles infections. MedicalResearch.com: What is the background for this study? Response: The fundamental reason leading to the increase in measles cases in the US is that some parents are withholding their children from routine measles vaccination: Failure to vaccinate. As a result, there are neighborhoods, schools, and communities that now have vaccination rates substantially below the 92% to 95% needed to prevent outbreaks of infection. Measles is the most contagious virus we know, so it takes very high vaccination rates to prevent transmission and to avert outbreaks. Vaccine hesitancy has many causes: Lack of knowledge of the severity of measles, concern over vaccine side-effects, low trust in public health, a desire to do things more “naturally” and it can also have political overtones, among others. The measles vaccine is extraordinarily effective; the routine two-dose series confers 97% to 98% protection for life. The rare “breakthrough” infections that occur in vaccinated persons are generally milder, with fewer complications than in persons who are unvaccinated. The US was certified as having eliminated measles in 2000 because of high vaccination rates across the country. Sadly, the US is likely to lose that designation because of sustained measles transmission, reverting us back to the bad old days. It is particularly sad for any of our children to have to endure measles and its consequences. All these cases could have been prevented by vaccination. MedicalResearch.com: What roles do a decrease in US immunization rates and/or increased immigration from under-vaccinated area play in this increase? Response: The substantial majority of unimmunized children in the US were born and raised in this country. They usually are members of middle- or upper-income families. The most frequent importers of measles into the US are our own unimmunized children who travel abroad, encounter measles virus and bring it back to their homes where the virus then spreads among the child’s schoolmates and playmates, creating an outbreak. MedicalResearch.com: Since many, especially younger, health care providers have never seen a case of measles, are there characteristic features clinicians should be aware of? Response: Measles vaccination has been so successful that many young and middle-aged doctors have never seen a case. Beginning 7-21 days after exposure, the onset of illness is characterized by high fever and malaise. Shortly thereafter the classic “three Cs” occur: Coryza, conjunctivitis and cough. Inside both cheeks white papules (Koplik spots) appear. The characteristic rash soon follows – it is erythematous, blanching, starting on the face and moving down the body, becoming darker over time. The rash may be quite subtle in dark-skinned persons. The common complications of measles include diarrhea, otitis media as well as viral and bacterial pneumonia. More serious complications include encephalitis which occurs approximately once per thousand infections. MedicalResearch.com: Are there areas, i.e. airports, sporting venues etc. where measles transmission is more likely? Response: Measles is readily transmitted among susceptible persons indoors. As most of the cases are in children, daycare, schools, religious services, birthday parties, and such are common venues for transmission although other sites such as airports and sporting events occasionally have been implicated. MedicalResearch.com: What should clinicians do if they have a suspected case of measles? Response: All cases of suspected measles should be reported immediately to the local health department. Disclosures: I have no relevant disclosures. The information on MedicalResearch.com is provided for educational purposes only, and is in no way intended to diagnose, cure, or treat any medical or other condition. Some links may be sponsored. Products, services and providers are not warranted or endorsed. Always seek the advice of your physician or other qualified health and ask your doctor any questions you may have regarding a medical condition. In addition to all other limitations and disclaimers in this agreement, service provider and its third party providers disclaim any liability or loss in connection with the content provided on this website. Dr. Schaffner[/caption] William Schaffner, MD Professor of Preventive Medicine, Department of Health Policy Professor of Medicine, Division of Infectious Diseases Vanderbilt University Medical Center Nashville, TN 37203 Dr. Schaffner discusses the recent increase in the incidence of measles infections. MedicalResearch.com: What is the background for this study? Response:  The fundamental reason leading to the increase in measles cases in the US is that some parents are withholding their children from routine measles vaccination: Failure to vaccinate.  As a result, there are neighborhoods, schools, and communities that now have vaccination rates substantially below the 92% to 95% needed to prevent outbreaks of infection.  Measles is the most contagious virus we know, so it takes very high vaccination rates to prevent transmission and to avert outbreaks.  Vaccine hesitancy has many causes:  Lack of knowledge of the severity of measles, concern over vaccine side-effects, low trust in public health, a desire to do things more “naturally” and it can also have political overtones, among others. The measles vaccine is extraordinarily effective; the routine two-dose series confers 97% to 98% protection for life.  The rare “breakthrough” infections that occur in vaccinated persons are generally milder, with fewer complications than in persons who are unvaccinated.  The US was certified as having eliminated measles in 2000 because of high vaccination rates across the country.  Sadly, the US is likely to lose that designation because of sustained measles transmission, reverting us back to the bad old days.  It is particularly sad for any of our children to have to endure measles and its consequences.  All these cases could have been prevented by vaccination. CDC Image MedicalResearch.com: What roles do a decrease in US immunization rates and/or increased immigration from under-vaccinated area play in this increase?   Response:  The substantial majority of unimmunized children in the US were born and raised in this country.  They usually are members of middle- or upper-income families.  The most frequent importers of measles into the US are our own unimmunized children who travel abroad, encounter measles virus and bring it back to their homes where the virus then spreads among the child’s schoolmates and playmates, creating an outbreak.
Author Interviews, C. difficile, Pediatrics / 07.08.2019

MedicalResearch.com Interview with: [caption id="attachment_50595" align="alignleft" width="160"]Larry K. Kociolek, MD MSCI  Attending Physician, Division of Infectious Diseases, Associate Medical Director of Infection Prevention and Control, Ann & Robert H. Lurie Children’s Hospital of Chicago  Assistant Professor of Pediatrics Northwestern University Feinberg School of Medicine Dr. Kociolek[/caption] Larry K. Kociolek, MD MSCI Attending Physician, Division of Infectious Diseases, Associate Medical Director of Infection Prevention and Control, Ann & Robert H. Lurie Children’s Hospital of Chicago Assistant Professor of Pediatrics Northwestern University Feinberg School of Medicine  MedicalResearch.com: What is the background for this study? What are the main findings? Response: Clostridioides (Clostridium) difficile colonization is very common among infants, yet infants almost never develop symptoms of infection. In adults, it is known that immunity against the toxins that C. difficile produces protect against C. difficile infection (CDI). Our goal was to determine whether or not infants who become colonized with C. difficile develop an immune response against these toxins. We collected stool from healthy infants at multiple time points during the first year of life to determine whether or not they became colonized with C. difficile. Then at 9-12 months old, we collected blood to see if we can identify antibodies in their blood that protect against these toxins. We discovered that colonization with C. difficile during infancy was strongly associated with the development of antibodies. These antibodies were able to protect against the harmful effects of these toxins in a laboratory cell culture model.
Author Interviews, CDC, Pediatrics, Vaccine Studies, Vanderbilt / 18.10.2018

MedicalResearch.com Interview with: "Vacuna influenza / Flu vaccine" by El Alvi is licensed under CC BY 2.0Kathryn M. Edwards, M.D. Sarah H. Sell and Cornelius Vanderbilt Chair in Pediatrics Professor of Pediatrics Vanderbilt University School of Medicine Dr. Edwards discusses the statement from the Infectious Diseases Society of America (IDSA) regarding the Centers for Disease Control and Prevention’s new data on child vaccine rates across the United States. MedicalResearch.com: What is the background for this study? What are the main findings? Response: To monitor the uptake of vaccines the CDC conducts a National Immunization Survey each year.  This survey is conducted by random-digit dialing (cell phones or landlines) of parents and guardians of children 19-35 months of age.  The interviewers ask the families who provides the vaccines for their children and if these providers can be contacted to inquire about the immunizations received.  The overall response rate to the telephone survey was 26% and immunization records were provided on 54% of the children where permission was granted.  Overall 15, 333 children had their immunization records reviewed. When comparing immunization rates for 2017 and 2016, the last two years of the study, several new findings were discovered. First the overall coverage rate for 3 doses of polio vaccine, one dose of MMR, 3 doses of Hepatitis b, and 1 dose of chickenpox vaccine was 90%, a high rate of coverage.  Children were less likely to be up to date on the hepatitis A vaccine (70%) and rotavirus vaccine (73%). Coverage was lower for children living in rural areas when compared with urban areas and children living in rural areas had higher percentages of no vaccine receipt at all (1.9%) compared with those living in urban areas (1%). There were more uninsured children in 2017 at 2.8% and these children had lower immunization rates.  In fact 7.1% of the children with no insurance were totally unimmunized when compared with 0.8% unimmunized in those with private insurance. Vaccine coverage varies by state and by vaccine.