germinal center inside a lymph node
Booster Is Best in the Same Limb as Initial Vaccine: Mouse Study
Compared to mice who got the doses in separate limbs, animals receiving flu shots in the same paw for both a first and second dose had better-trained memory B cells that bound tighter to the vaccine antigen.
Booster Is Best in the Same Limb as Initial Vaccine: Mouse Study
Booster Is Best in the Same Limb as Initial Vaccine: Mouse Study

Compared to mice who got the doses in separate limbs, animals receiving flu shots in the same paw for both a first and second dose had better-trained memory B cells that bound tighter to the vaccine antigen.

Compared to mice who got the doses in separate limbs, animals receiving flu shots in the same paw for both a first and second dose had better-trained memory B cells that bound tighter to the vaccine antigen.

immunization

In one of the only known photos of Abraham Lincoln taken on the day of the Gettysburg Address, Lincoln can be seen seated, hatless, just below and to the right of the flag. Lincoln began developing symptoms of smallpox on the train home to Washington, DC.
Presidential Pox, 1863
Annie Melchor | Dec 1, 2021
Researchers continue to debate whether US President Abraham Lincoln was coming down with smallpox as he delivered his famous Gettysburg Address, and if he had been immunized.
a man in a white t-shirt and face mask receives a bandage on his arm from a clinician wearing blue gloves and a plastic face shield
COVID-19 Vaccines Work in People with Cancer: Study
Marcus A. Banks | Jun 25, 2021
Moderna’s, Pfizer’s, and Johnson & Johnson’s shots all offered protection against the virus regardless of cancer type, although slightly less so in people with blood cancer.
Woman holding a CDC COVID-19 vaccination card with both hands.
COVID-19 mRNA Vaccines Appear Effective Against Multiple Variants
Lisa Winter | May 6, 2021
Data from three studies indicate that fully vaccinated patients are able to stave off severe disease from the B.1.1.7, B.1.351, and P.1 variants.
Pink background with menstrual products off to the right
No Proof COVID-19 Vaccine Affects Menstruation or Fertility
Lisa Winter | Apr 27, 2021
Following vaccination, some women claim their periods have changed, leading to rumors about how the shots affect recipients’ reproductive systems, and even others’ by proxy.  
Blood Clots a Very Rare Side Effect of AstraZeneca Vaccine: EMA
Catherine Offord | Apr 8, 2021
The European Medicines Agency emphasizes that the benefits of the jab in protecting against COVID-19 still far outweigh the risks.
Scientists Reverse Engineer mRNA Sequence of Moderna Vaccine
Lisa Winter | Apr 6, 2021
Stanford University researchers determined the code from spare drops in discarded vials of the COVID-19 vaccine and published it on GitHub.
oxford astrazeneza covid-19 vaccine sars-cov-2 coronavirus pandemic clinical trial phase 2 US chile peru hospitalization
AstraZeneca’s COVID-19 Shot Completely Prevented Severe Disease
Kerry Grens | Mar 22, 2021
The vaccine was 79 percent effective at blocking symptomatic infections, according to data from a Phase 3 trial in the US, Chile, and Peru. A US safety oversight board says the data might be incomplete.
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COVID-19 Hospitalizations Tank a Month After Vaccines Roll Out
Asher Jones | Feb 23, 2021
Two preliminary reports from the UK provide real-world evidence in support of the Pfizer/BioNTech and Oxford-AstraZeneca vaccines.
New SARS-CoV-2 Variant Could Evade Antibodies
Lisa Winter | Jan 22, 2021
A preprint casts doubt on vaccine effectiveness in light of certain mutations in the 501Y.V2 variant that emerged from South Africa.
Patients Reinfected with Coronavirus in Hong Kong, Europe
Lisa Winter | Aug 25, 2020
So far, there are three patients known to have been infected with SARS-CoV-2 twice, and in at least one case the second time around was asymptomatic.
Bioethicists Criticize WHO’s Malaria Vaccine Trial
Lisa Winter | Feb 28, 2020
The study, conducted in Malawi, Kenya, and Ghana, did not obtain informed consent from each parent whose child participated, but rather considered consent “implied” because of the particular experimental design.
50 Children Dead from Measles Outbreak in Samoa 
Emily Makowski | Dec 2, 2019
The public health emergency has spurred a mass vaccination campaign.
Wellcome Trust study vaccine attitude safety effectiveness Europe France trust vaccines
Study Finds Low Trust in Vaccines in Europe
Chia-Yi Hou | Jun 19, 2019
Just half of respondents in Eastern Europe agree that vaccines are safe.
A bottle labelled "malaria vaccine" with a syringe
Distribution of World’s First Malaria Vaccine Begins
Shawna Williams | Apr 23, 2019
The World Health Organization and its partners will test the public health effect of immunization in parts of Malawi, Ghana, and Kenya.
Measles Cases Rise in Outbreaks in Ukraine, Philippines
Kerry Grens | Feb 14, 2019
The World Health Organization reports that a number of countries are experiencing “sizeable” numbers of the infection due to a failure to vaccinate.
Questions Raised About Pertussis Reemergence
Abby Olena | Dec 20, 2018
Scientists debate why the number of whooping cough cases is up, and whether the effectiveness of a vaccine introduced within the last two decades is to blame.
skin covered in small red bumps
A Record Year for Measles Cases in Europe
Shawna Williams | Aug 21, 2018
The WHO reports more than 41,000 cases in the region in the first half of 2018.
Arrests, Investigations Over Vaccine Scandal in China
Kerry Grens | Jul 27, 2018
Changsheng is found to have forged records for a rabies vaccine and is accused of distributing thousands of substandard DPT immunizations to be used in children.
Measles Cases On the Rise in England
Jim Daley | May 11, 2018
The increase is associated with travel to Europe, where large outbreaks are occurring.