Vaccine News

Vaccine news brought to you by Precision Vaccinations.

Mar 31, 2023 • 1:40 pm CDT
from Pixabay

Resistance to Paxlovid™ is already evident among viral SARS-CoV-2 variants currently circulating globally, indicating that this stand-alone antiviral, known as a protease inhibitor, could soon become less effective in treating COVID-19 patients.

Published on March 29, 2023, this study's conclusion was presented in the peer-reviewed journal Science Advances.

To lower the risk of resistance, the researchers say protease inhibitors must be carefully designed to avoid simple resistance mutations. 

These researchers wrote that these results encourage the monitoring of resistance variants and the development of additional protease inhibitors and other antiviral drugs with different mechanisms of action and resistance profiles for combinatorial therapy.

"Despite Paxlovid's proven success in blunting COVID-19 symptoms, the long-term consequences of its widespread use in speeding up resistance are unknown," commented S. Arad Moghadasi, co-author of the study and a University of Minnesota Medical School graduate student in a press release.

Mar 31, 2023 • 11:04 am CDT
U.S. CDC FluView data March 31, 2023

The U.S. Centers for Disease Control and Prevention (CDC) today announced four additional influenza-associated pediatric fatalities have occurred during the 2022-2023 flu season in the United States.

A total of 138 pediatric flu deaths have been reported so far this flu season.

The good news is the CDC FluView week #12 report confirmed seasonal flu rates were low nationally last week, with outpatient respiratory illness below baseline, and eight of 10 HHS regions are below their respective baselines as of March 31, 2023.

Previously, the World Health Organization published Influenza Update N° 401 on March 20, 2023, stating most indicators of influenza activity decreased to levels similar to or below levels typically observed this time of year in the Northern Hemisphere.

The CDC suggests anyone traveling to the Southern Hemisphere in April 2023 speak with a healthcare provider about potentially getting an additional flu shot for protection.

Flu shots remain available for most people over six months at most clinics and pharmacies in the U.S.

As of March 4, 2023, about 173.37 million influenza vaccines had been distributed during the 2022-2023 flu season. 

Mar 31, 2023 • 8:06 am CDT
from Pixabay

The European Medicines Agency human medicines committee today announced it recommended authorizing the COVID-19 vaccine Bimervax (previously COVID-19 Vaccine HIPRA) as a booster in people aged 16 years and older who have previously been vaccinated with an mRNA COVID-19 vaccine.

It is the eighth vaccine recommended in the European Union for protecting against COVID-19 and, together with the vaccines already authorized, will support vaccination campaigns in EU Member States during the pandemic.

An updated listing of COVID-19 vaccines is posted at Coronavirus Today.

Mar 31, 2023 • 7:32 am CDT
by Dom Carver

NSW Health today announced a Western Sydney infant infectious with measles spent time in locations in Parramatta and Westmead on March 27, 2023.

The infant, too young to be vaccinated against measles, acquired the infection in India before returning to Sydney.

NSW Health also confirmed a local measles case in September 2022.

Dr. Christine Selvey, Director of Communicable Diseases, NSW Health, commented in a press release on March 29, 2023, "Measles is a highly contagious infection, and the most vulnerable are infants under 12 months, who are too young to be vaccinated against it, other members of the community who are not fully vaccinated and people with a weakened immune system."

Measles cases increased worldwide by about 80% during 2022 compared with 2021.

Measles is a vaccine-preventable disease that quickly spreads in the air through coughing or sneezing by someone unwell with the disease.

"It can take up to 18 days for symptoms to appear after an exposure, so it is essential to stay vigilant if you've been in the above locations, and if you develop symptoms, please call ahead to your GP to ensure you do not spend time in the waiting room with other patients," Dr. Selvey added.

The U.S. Food and Drug Administration (FDA) recently approved the intramuscular route of administration for M-M-R®II and ProQuad®. In addition, the FDA approved the Priorix vaccine for use in the U.S.

Measles outbreak news for 2023 is posted at Vax-Before-Travel.

Mar 31, 2023 • 3:27 am CDT
by Elena We

The start-up company PathoVax LLC announced that the U.S. Food and Drug Administration had concluded that a Phase 1 clinical trial for its monovalent component- HPV16 RG1-VLP vaccine RGVax may proceed.

This first-in-human, global multicenter Phase 1 clinical study seeks to demonstrate RGVax's safety and immunogenicity responses to HPV16 RG1-VLP in healthy volunteers.

RGVax is a chimeric HPV virus-like particle platform that displays 360 copies of the highly conserved, neutralizing HPV epitope (RG1).

The foundational technology is based on research conducted at the Johns Hopkins University and Medical University Vienna.

Unlike existing HPV vaccines, the RGVax technology and formulation have been shown to provide comprehensive protection against at least 18 high-risk human papillomavirus (HPV) types with immunogenicity lasting over a year without additional boosts in head-to-head studies with existing approved HPV vaccines.

"The world needs more, and particularly broad-based, HPV vaccines. We look forward to globally supporting these efforts in parallel and beyond this Phase 1, especially in Asia-Pacific and other developing countries, where there is a high burden of HPV diseases," said Dr. Kevin Koh, Chairman of PathoVax, in a press release on March 29, 2023.

A National Cancer Institute PREVENT contract funds the initiation of the Phase 1 study. 

As of March 31, 2023, there are various approved HPV vaccines and several vaccine candidates in development. 

Mar 31, 2023 • 2:49 am CDT
by David Mark

The Janssen Pharmaceutical Companies of Johnson & Johnson recently disclosed that after assessing the respiratory syncytial virus (RSV) vaccine landscape, the Company would discontinue its RSV adult vaccine program.

“By periodically refocusing our portfolio, Janssen ensures that we are deeply invested in products that have the power to transform patients’ lives,” said Bill Hait, M.D., Ph.D., Executive Vice President, Chief External Innovation and Medical Officer and Interim Head, Janssen R&D., in a press release on March 29, 2023.

The decision to discontinue the RSV adult vaccine program is part of a broader effort to make strategic choices for its investments to focus on medicines with the greatest potential benefit to patients. 

As of March 31, 2023, the U.S. FDA has not approved any RSV vaccine candidate.

However, the FDA previously approved monoclonal antibody therapies for infants.

 

Mar 31, 2023 • 2:30 am CDT
U.S. CDC - lymph gland called a bubo

The peer-reviewed journal Science Advances recently disclosed researchers from Tel Aviv University and the Israel Institute for Biological Research developed the first mRNA-based, lipid nanoparticle (LNP) vaccine effective against a lethal bacteria.

Published on March 8, 2023, this study on mice demonstrated that all vaccinated animals were fully protected against the bacteria that causes the plague.

Humans usually get the plague after being bitten by a rodent flea that is carrying the plague bacterium, says the U.S. CDC.

The most common sign of bubonic plague is the rapid development of a swollen and painful lymph gland called a bubo.

Plague morbidity and mortality rates have substantially decreased since the introduction of antimicrobials.

However, the isolation of Y. pestis strains resistant to multiple therapeutic antibiotics and the concern of a natural or intentional disease outbreak initiated by antibiotic-resistant strains emphasize the need to develop vaccines against the plague.

The researchers wrote, "Our mRNA-LNP vaccine elicited humoral and cellular immunological responses in C57BL/6 mice and conferred rapid, full protection against lethal Y. pestis infection after a single dose."

This study's findings suggest there is a new way of developing vaccines for bacterial diseases, including diseases caused by antibiotic-resistant bacteria.

Mar 31, 2023 • 1:37 am CDT
Global distribution of Avian Influenza: October 2022 to March 30, 2023

The Chilean Ministry of Health recently confirmed the country's first case of human infection with the avian influenza A(H5N1) virus.

This is the second human "H5N1 bird flu" virus infection reported in South America; Ecuador reported the first in December 2022.

Globally, this is the 11th human case of H5N1 reported since January 2022.

The prior 10 H5N1 cases also had exposure to poultry.

Bird Flu (Avian influenza) is a disease caused by influenza type A viruses that occur naturally among birds.

Detection of human infection with H5N1 bird flu in another country in South America is not surprising, wrote the U.S. Centers for Disease Control and Prevention (CDC) on March 29, 2023.

A recent CDC H5N1 technical report noted that "because of …the wide global prevalence of HPAI A(H5N1) viruses in wild birds and poultry outbreaks, continued sporadic human infections are anticipated."

As of early March 2023, H5N1 viruses (clade 2.3.4.4b) have been detected in mammals, wild birds, or poultry in 16 Latin America, the Caribbean, the United States, Canada, and most of the countries in the world.

In the U.S., about 6,300 people in 52 jurisdictions have been monitored since 2022, and only one human case has been identified in Colorado.

The CDC notes the annual flu shot does not offer protection from this type of influenza. However, there is an approved bird flu vaccine (Audenz™) should a human-to-human outbreak occur.

Mar 30, 2023 • 3:57 pm CDT
Chile Avian Influenza Viruses March 29, 2023

The Republic of Chile Ministry of Health today announced the first case of bird flu in humans. Reported from northern Chile, the 53-year-old man is in stable condition.

The avian influenza source of contact is being investigated.

The H5N1 "bird flu" virus can be transmitted from birds or marine mammals to humans, but there are no known cases of human-to-human transmission in Chile as of March 30, 2023.

Infected birds were recently confirmed in Argentina, Bolivia, Columbia, Peru, Venezuela, and Uruguay.

The U.S. Centers for Disease Control and Prevention (CDC) Technical Report issued on March 17, 2023, confirmed the current risk to the public from A(H5N1) viruses remains low.

If there is a bird flu outbreak in humans, there is one U.S. FDA-approved bird flu vaccine.

However, the CDC says the annual flu shot will not prevent bird flu infections.

According to the CDC FluView dashboard, 54 countries reported bird flu outbreaks to the World Health Organization from 2021 through March 29, 2023.

Mar 30, 2023 • 3:34 pm CDT
WHO COVID-19 Report #136 March 30, 2023

The World Health Organization's (WHO) Weekly epidemiological update on the COVID-19 pandemic indicates further decreases in cases and related fatalities.

As of March 30, 2023, Edition #136 reports nearly 3.6 million new cases, and over 25,000 deaths were reported in the last 28 days, a decrease of 27% and 39%, respectively, compared to the previous period.

Despite this overall downward trend, it is essential to note that several countries, such as India, have recently reported an increase in COVID-19 cases. 

At the country level, the highest numbers of new 28-day cases were reported from the United States of America (678,002 new cases; -38%), the Russian Federation (333,073 new cases; +6%), the Republic of Korea (270,378 new cases; -23%), China (255,961 new cases; -52%), and Japan (242,894 new cases; -68%).

Mar 30, 2023 • 8:35 am CDT
by Patrick Sommer

Valneva SE announced today it would host a roundtable on Zika virus vaccines at the 23rd World Vaccine Congress in Washington, D.C.

On April 4, 2023, Valneva’s Chief Medical Officer, Juan Carlos Jaramillo, MD, will host a roundtable discussion on the opportunities and challenges of a Zika vaccine.

Valneva successfully developed an inactivated whole-virus Zika vaccine candidate VLA1601 through a Phase 1 clinical trial, which was last updated on July 5, 2019.

The company is evaluating re-entry into clinical development later in 2023 or 2024.

VLA1601 is a purified, inactivated, whole Zika virus vaccine candidate adsorbed on aluminum hydroxide.

As of March 30, 2023, no approved Zika vaccines are available in the U.S.

Mar 29, 2023 • 2:52 pm CDT
Google map city of Bata, March 29, 2023

With the new slogan "health for all, everyone's task," Equatorial Guinea Health intends to involve the entire population in the surveillance of the Marburg virus, reported ahoraEG.com.

A new action plan will require passengers, especially those coming from the city of Bata, with over 200,000 residents, to fill out a form to enter location information so that they can be located quickly and on time in case of any suspicion.

Obama Nve has indicated that filling out the Marburg virus control form is a civic duty for anyone, "we want to beg the population that we are going to demand that they fill out a small file, not to bother because we do it to safeguard public health in our country."

As of March 29, 2023, about 459 contacts have been followed up since the Marburg outbreak was declared in mid-February 2023.

In an interview on national television, the member of the Technical Committee for Health Emergencies, Maricamen Andeme Ela, assured that we are in a drastic situation because we have not wanted to comply with the measures imposed since the appearance of the first case, "Marburg exists, and we are seeing it, and unfortunately, it is taking human lives."

WHO Director-General's opening remarks at a media briefing on March 29, 2023, included the number of officially reported Marburg cases remaining at nine, with seven deaths, in three provinces. 

However, the WHO is aware of additional cases, and we have asked the government to report these cases.

Breaking news regarding the Marburg outbreaks in Burundi, Tanzania, and Africa is posted at Vax-Before-Travel.

 

Mar 29, 2023 • 11:25 am CDT
by Ahmad Ardity

Vaccitech plc today announced positive topline final data from a Phase 1b/2a clinical trial of VTP-300 in people with chronic Hepatitis B (HBV) infection.

VTP-300 is the first antigen-specific immunotherapy shown to induce sustained reductions in Hepatitis B surface antigen. 

"The safety data and HBsAg reductions in the HBV002 study are very encouraging, and we look forward to sharing the full data set, including immune responses, at the EASL conference," said Bill Enright, CEO of Vaccitech, in a press release on March 28, 2023.

"Less than 10% of people with chronic HBV reach a functional cure with current therapies."

"We believe VTP-300 has the potential to be a critical component of a functional cure for HBV, potentially eliminating the need for chronic treatment."

"Our ongoing trials are exploring dosing, including an additional booster, and combination approaches with readouts expected towards the end of the year."

And VTP-300 is a heterologous immunotherapy candidate consisting of an initial dose using the ChAdOx platform and a second dose(s) using MVA encoding multiple hepatitis B antigens, including full-length surface, modified polymerase, and core antigens.

The full announcement and study results are posted at this link.

Mar 29, 2023 • 2:43 am CDT
U.S. CDC malaria map March 2023

The World Health Organization (WHO) today announced it had certified the countries of Azerbaijan and Tajikistan for eliminating malaria in their territories. The certification follows the two countries' sustained, century-long effort to stamp out this vaccine-preventable disease.

As of March 29, 2023, a total of 41 countries and one territory have been certified malaria-free by WHO, including 21 countries in the European Region.

"The people and governments of Azerbaijan and Tajikistan have worked long and hard to eliminate malaria," Tweeted WHO Director-General Dr. Tedros Adhanom Ghebreyesus.

"Their accomplishment further proves that eliminating malaria is possible with the right resources and political commitment. I hope that other countries can learn from their experience."

The final decision on awarding a malaria-free certification rests with the WHO Director-General, based on a recommendation by the independent Technical Advisory Group on Malaria Elimination and Certification. For more on WHO's malaria-free certification process, visit this WHO link.

Malaria vaccines are available in certain countries in 2023. However, the United States has not approved a vaccine yet.

Mar 29, 2023 • 2:13 am CDT
India Ministry of Health and Family Welfare March 2023

While the annual flu season in the United States has subsided, India's government reports an unusual influenza surge.

PTI reported today Minister of State for Health Bharati Pravin Pawar informed the Rajya Sabha that 1,317 cases of H3N2 have been confirmed from January to March 21, 2023.

According to the Indian Council of Medical Research, of 510 H3N2 cases reported in the last two months, 19 patients required ICU admission, Pawar wrote to PTI on March 28, 2023.

The H3N2 virus spreads from an infected person through droplets in the air or direct contact with virus-laden surfaces, says the U.S. CDC.

The severity of human illness caused by H3N2 is similar to seasonal flu, which can become severe if complications like pneumonia develop.

Another influenza version is called 'swine flu.'

H3N2v is a non-human influenza virus that normally circulates in pigs. Viruses that normally circulate in pigs are "swine influenza viruses." When these viruses infect humans, they are termed "variant" viruses, says the CDC. Furthermore, the seasonal flu shot does not protect against H3N2v. 

The CDC's FluView Interactive Novel Flu A digital tool displays the most current case counts for variant virus infections reported in the U.S.

Previously, India's government confirmed that young children and old persons with co-morbidities are the most vulnerable groups in seasonal influenza.

Seasonal influenza is an acute respiratory infection caused by influenza viruses that circulate in all parts of the world, and the cases are seen to increase during certain months globally.

The cases arising from seasonal influenza in India are expected to decline by the end of March 2023.

The World Health Organization published Influenza Update N° 401 on March 20, 2023, stating most indicators of influenza activity in the Northern Hemisphere decreased to levels similar to or below levels typically observed this time of year.

In the U.S., annual flu shots remain available at many clinics and community pharmacies.